Difference between revisions of "Sub Ally Support Skills"

From Granblue Fantasy Wiki
Jump to navigation Jump to search
 
Line 273: Line 273:
 
30% boost to Wind allies' ATK when debuffed.
 
30% boost to Wind allies' ATK when debuffed.
 
|Doesn't stack with [[Sevastien]]'s {{CharacterSupportSkill|Sevastien|1}}.
 
|Doesn't stack with [[Sevastien]]'s {{CharacterSupportSkill|Sevastien|1}}.
 +
|-
 +
|{{Itm|Kolulu (Summer)|large,125|notitle}}
 +
|[[Kolulu (Summer)]]
 +
|{{SSR|30}}
 +
|{{Water|60}}
 +
|{{Water|60}}
 +
|{{CharacterSupportSkill|page=Kolulu (Summer)|no=2|large=true}}
 +
|Yes
 +
|Yes
 +
|No
 +
|Supplement Water allies' damage based on their number of {{Status|Deluge Crest}}.
 +
|
 
|-
 
|-
 
|{{Itm|Lecia (Water)|large,125|notitle}}
 
|{{Itm|Lecia (Water)|large,125|notitle}}

Latest revision as of 03:34, 1 July 2020

About

Some characters have support skills that are active even when they are set as a sub ally, also known as the backline or back row.

  • Some of these support skills only work from the backline, while others work in both the frontline and backline.
    • If the skill says "Takes effect even when (character) is a sub ally" then it works both as a main ally and as a sub ally.
    • If the skill says "When Sub Ally:" then it only works as a sub ally.
  • Support skills from allies that boost ATK affect the Main Character's estimated damage even when that ally is placed in a sub ally slot. These support skills do not work from the backline in actual battle. [1]
  • A number of these support skills involve Crest-based mechanics.
  • The Arcarum Evokers notably all have sub ally support skills, in addition to a support skill that activates when they are switched out from the backline to the frontline.

Similarly related, there are also characters who have main ally support skills that activate when another specific character is an ally, whether they are a main ally or sub ally.

Characters with Sub Ally Support Skills

Icon Name Rarity Character Element Affected Element Support Skill Also Works from Frontline? Crests? Evoker? Description Notes
Npc m 3040167000 01.jpg
Alanaan Rarity SSR.png Label Element Fire.png Label Element Fire.png Icon Arcarum Sub Support Skill.png 
The Sun ReversedWhen Sub Ally: 20% boost to Fire allies' healing specsHealing and healing cap.
Remove 1 debuff from a Fire ally when that ally takes turn-based damage.
No No Yes 20% boost to Fire allies' healing specs.

Remove 1 debuff from a Fire ally when that ally takes turn-based damage.

Npc m 3030226000 01.jpg
Arthur (Event) Rarity SR.png Label Element Wind.png Label Element Wind.png Icon Support Skill.png 
Knight of Kindness5% boost to Wind allies' charge bar at the start of battle.
Yes No No 5% boost to Wind allies' charge bar at the start of battle. Doesn't stack with Charlotta's Icon Support Skill.png Apostle of Justice5% boost to all allies' charge bar at the start of battle..
Npc m 3040009000 01.jpg
Cagliostro Rarity SSR.png Label Element Earth.png Label Element Earth.png Icon Support Skill.png 
World Cutest!Boost to Earth allies' critical hit rate based on their number of Status Wasteland Crest.pngWasteland CrestEarth magic is amplified (Max: 5 / Can't be removed)
.
(Boost takes effect even when Cagliostro is a sub ally.)
Yes Yes No Boost to Earth allies' critical hit rate based on their number of Status Wasteland Crest.pngWasteland CrestEarth magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040062000 01.jpg
Cagliostro (Halloween) Rarity SSR.png Label Element Dark.png Label Element Dark.png Icon Support Skill.png 
Oblivion's BanquetLight damage reduction to Dark allies based on their number of Status Oblivion Crest.pngOblivion CrestDark magic is amplified (Max: 5 / Can't be removed)
.
(Light damage reduction takes effect even when Cagliostro is a sub ally.)
Yes Yes No Light damage reduction to Dark allies based on their number of Status Oblivion Crest.pngOblivion CrestDark magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040225000 01.jpg
Cagliostro (Summer) Rarity SSR.png Label Element Water.png Label Element Water.png Icon Support Skill.png 
Beach-ReadyBoost to Water allies' critical hit rate based on their number of Status Deluge Crest.pngDeluge CrestWater magic is amplified (Max: 5 / Can't be removed)
(Boost takes effect even when Cagliostro is a sub ally).
Yes Yes No Boost to Water allies' critical hit rate based on their number of Status Deluge Crest.pngDeluge CrestWater magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040164000 01.jpg
Caim Rarity SSR.png Label Element Earth.png Label Element Earth.png Icon Arcarum Sub Support Skill.png 
The Hanged Man ReversedWhen Sub Ally: When all equipped weapons are different, 20% boost to Earth allies' ATKPerpetuity modifier, 50% boost to DEF, and 10% boost to damage cap.
No No Yes When all equipped weapons are different, 20% boost to Earth allies' ATK, 50% boost to DEF, and 10% boost to damage cap.
Npc m 3040010000 01.jpg
Charlotta Rarity SSR.png Label Element Water.png Label Element Any.png Icon Support Skill.png 
Apostle of Justice5% boost to all allies' charge bar at the start of battle.
Yes No No 5% boost to all allies' charge bar at the start of battle. Obtained at level 95.

Does not stack with Arthur (Event)'s Icon Support Skill.png Knight of Kindness5% boost to Wind allies' charge bar at the start of battle..

Npc m 3040020000 01.jpg
Charlotta (Halloween) Rarity SSR.png Label Element Light.png Label Element Any.png Icon Support Skill.png 
Carnival KnightAdd 1 blue potion at battle start. (Takes effect even when Charlotta is a sub ally.)
Yes No No Add 1 blue potion at battle start.
Npc m 3030202000 01.jpg
Chloe (Summer) Rarity SR.png Label Element Wind.png Label Element Any.png Icon Support Skill.png 
UV Is No Joke! ☆=(ゝω・)When Sub Ally: 5% Earth damage reduction to all allies.
No No No 5% Earth damage reduction to all allies. Chloe (Summer) can switch places with a sub ally using Ability Switch.png ZOMG! Fer realz?Switch out with a sub ally.
(If Status Turned Up.pngTurned UpGains bonus effects upon using certain skills
, all allies gain Status Shield.pngShieldNext ATK received will be ineffective for a fixed amount
after switch. Removes Turned Up effect.)
.
Npc m 3040004000 01.jpg
De La Fille Rarity SSR.png Label Element Light.png Label Element Light.png Icon Support Skill.png 
Seven Jewel RadianceBoost to Light allies' healing specs based on their number of Status Aurora Crest.pngAurora CrestLight magic is amplified (Max: 5 / Can't be removed)
.
(Takes effect even when De La Fille is a sub ally.)
Yes Yes No Boost to Light allies' healing specs based on their number of Status Aurora Crest.pngAurora CrestLight magic is amplified (Max: 5 / Can't be removed)
.
Obtained at level 95.
Npc m 3040113000 01.jpg
De La Fille (Earth) Rarity SSR.png Label Element Earth.png Label Element Any.png Icon Support Skill.png 
Look What I've Found...Chance to get casino chips at the end of the battle
Yes No No Chance to get casino chips at the end of the battle
Npc m 3040163000 01.jpg
Estarriola Rarity SSR.png Label Element Wind.png Label Element Wind.png Icon Arcarum Sub Support Skill.png 
Temperance ReversedWhen Sub Ally: All Wind allies gain a random buff upon activating a Wind chain burst.
No No Yes All Wind allies gain a random buff upon activating a Wind chain burst.
Npc m 3040086000 01.jpg
Forte Rarity SSR.png Label Element Dark.png Label Element Dark.png Icon Support Skill.png 
Sky SupremacyBoost to Dark allies' skill damage and skill damage cap based on their number of Status Oblivion Crest.pngOblivion CrestDark magic is amplified (Max: 5 / Can't be removed)
('Boost to skill specs' takes effect even when Forte is a sub ally).
Yes Yes No Boost to Dark allies' skill damage and skill damage cap based on their number of Status Oblivion Crest.pngOblivion CrestDark magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040161000 01.jpg
Fraux Rarity SSR.png Label Element Fire.png Label Element Fire.png Icon Arcarum Sub Support Skill.png 
The Devil ReversedWhen Sub Ally: Extend Fire allies' debuff durations to foes by 1 turn.
No No Yes Extend Fire allies' debuff durations to foes by 1 turn.
Npc m 3030271000 01.jpg
Friday (Summer) Rarity SR.png Label Element Fire.png Label Element Fire.png Icon Support Skill.png 
Casual FridayWhen Sub Ally: Refresh effect to Fire allies on Fridays (JST) (Healing cap: 250)
No No No Refresh effect to Fire allies on Fridays (JST) (Healing cap: 250).
Npc m 3040162000 01.jpg
Geisenborger Rarity SSR.png Label Element Light.png Label Element Light.png Icon Arcarum Sub Support Skill.png 
The Star ReversedWhen Sub Ally: Caps Dark damage taken by Light allies at 10,000 per hit.
No No Yes Caps Dark damage taken by Light allies at 10,000 per hit.
Npc m 3040168000 01.jpg
Haaselia Rarity SSR.png Label Element Water.png Label Element Water.png Icon Arcarum Sub Support Skill.png 
The Moon ReversedWhen Sub Ally:
+1% boost to Water allies' ATKUnique modifier based on number of turns passed (Max: 20% at 20 turns).
+2% boost to Water allies' DEF based on number of turns passed (Max: 40% at 20 turns).
No No Yes +1% boost to Water allies' ATK based on number of turns passed (Max: 20% at 20 turns).

+2% boost to Water allies' DEF based on number of turns passed (Max: 40% at 20 turns).

Npc m 3040223000 01.jpg
Halluel and Malluel (Summer) Rarity SSR.png Label Element Light.png Label Element Light.png Icon Support Skill.png 
Adventurous TwinsSupplement Light allies' damage dealt based on their number of Status Aurora Crest.pngAurora CrestLight magic is amplified (Max: 5 / Can't be removed)
.
(Takes effect even when Halluel and Malluel is a sub ally.)
Yes Yes No Boost to Light allies' DMG dealt based on their number of Status Aurora Crest.pngAurora CrestLight magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3030222000 01.jpg
Karteira (SR) Rarity SR.png Label Element Wind.png Label Element Any.png Icon Extended Mastery Support Skill.png 
Extended Mastery Support SkillBoost to rupies earned in battle
Yes No No Boost to rupies earned in battle
Npc m 3040166000 01.jpg
Katzelia Rarity SSR.png Label Element Wind.png Label Element Wind.png Icon Arcarum Sub Support Skill.png 
Judgement ReversedWhen Sub Ally:
Refresh 5% of Wind allies' HP after each turn when not debuffed (Healing cap: 350).
30% boost to Wind allies' ATKPerpetuity modifier when debuffed.
No No Yes Refresh 5% of Wind allies' HP after each turn when not debuffed (Healing cap: 350).

30% boost to Wind allies' ATK when debuffed.

Doesn't stack with Sevastien's Icon Support Skill.png Grandbutler Knows BestWhen Sub Ally: Refresh 3% of all allies' HP at the end of a turn (Healing cap: 150)..
Npc m 3040283000 01.jpg
Kolulu (Summer) Rarity SSR.png Label Element Water.png Label Element Water.png Icon Support Skill.png 
Taste the SeaSupplement Water allies' damage based on their number of Status Deluge Crest.pngDeluge CrestWater magic is amplified (Max: 5 / Can't be removed)
.
(Takes effect even when Kolulu is a sub ally.)
Yes Yes No Supplement Water allies' damage based on their number of Status Deluge Crest.pngDeluge CrestWater magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040263000 01.jpg
Lecia (Water) Rarity SSR.png Label Element Water.png Label Element Water.png Icon Support Skill.png 
Backup FireWhen Sub Ally: When a Water chain burst activates: Water damage to a foe based on number of chains.
No No No When a Water chain burst activates: Water damage to a foe based on number of chains.
Npc m 3040007000 01.jpg
Lily Rarity SSR.png Label Element Water.png Label Element Water.png Icon Support Skill.png 
Shine Crystal10% boost to DEF.
At level 95:
Boost to DEF now applies to all allies. Fire damage reduction to Water allies based on their number of Status Deluge Crest.pngDeluge CrestWater magic is amplified (Max: 5 / Can't be removed)
. (Fire DMG reduction takes effect even when Lily is a sub ally.)
Yes Yes No Fire damage reduction to Water allies based on their number of Status Deluge Crest.pngDeluge CrestWater magic is amplified (Max: 5 / Can't be removed)
.
Obtained at level 95.
Npc m 3040165000 01.jpg
Lobelia Rarity SSR.png Label Element Earth.png Label Element Earth.png Icon Arcarum Sub Support Skill.png 
The Tower ReversedWhen Sub Ally: Earth allies gain 6% Status Skill DMG Cap Up.pngSkill DMG Cap Up (Stackable)Can deal big bonus DMG when Skill DMG dealt
in one turn reaches a certain amount (Stackable)
Strength: 6% (Max: 30%)Can't be removed
(Max: 30%) upon casting a skill (Max: 5).
No No Yes Earth allies gain 6% Status Skill DMG Cap Up.pngSkill DMG Cap Up (Stackable)Can deal big bonus DMG when Skill DMG dealt
in one turn reaches a certain amount (Stackable)
Strength: 6% (Max: 30%)Can't be removed
(Max: 30%) upon casting a skill (Max: 5).
Npc m 3030182000 01.jpg
Lyria (Event) Rarity SR.png Label Element Any.png Label Element Any.png Icon Support Skill.png 
Life LinkCan use summons twice in one turn if Lyria is in the front line. If the Main Character or Lyria reaches 0 HP, both will be knocked out.
No No No Cannot use summons when Lyria is a sub ally.
Npc m 3040213000 01.jpg
Macula Marius Rarity SSR.png Label Element Water.png Label Element Water.png Icon Support Skill.png 
Frigid MaidenBoost to Water allies' skill specs based on their number of Status Deluge Crest.pngDeluge CrestWater magic is amplified (Max: 5 / Can't be removed)
.
(Boost to skill specs takes effect even when Macula Marius is a sub ally.)
Yes Yes No Boost to Water allies' skill specs based on their number of Status Deluge Crest.pngDeluge CrestWater magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040247000 01.jpg
Magisa (Holiday) Rarity SSR.png Label Element Earth.png Label Element Earth.png Icon Support Skill.png 
The Jolliest WitchBoost to Earth allies' C.A. specs based on their number of Status Wasteland Crest.pngWasteland CrestEarth magic is amplified (Max: 5 / Can't be removed)
.
(Takes effect even when Magisa is a sub ally.)
Yes Yes No Boost to Earth allies' C.A. specs based on their number of Status Wasteland Crest.pngWasteland CrestEarth magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040160000 01.jpg
Maria Theresa Rarity SSR.png Label Element Water.png Label Element Water.png Icon Arcarum Sub Support Skill.png 
Justice ReversedWhen Sub Ally: 300% Water damage to all foes when a Water ally casts a buff-removing skill (Damage cap: ~480,000).
Inflict 10% Status AttackDownStack.pngATK Down (Stackable)ATK is lowered (Stackable)
Strength: 10% (Max: 30%)Base Accuracy: 90%Duration: 180 seconds
(Max: 30%) and 10% Status DefenseDownStack.pngDEF Down (Stackable)DEF is lowered (Stackable)
Strength: 10% (Max: 30%)Base Accuracy: 90%Duration: 180 seconds
(Max: 30%).
No No Yes Water damage to all foes when a Water ally casts a buff-removing skill. Inflict 10% Status AttackDownStack.pngATK Down (Stackable)ATK is lowered (Stackable)
Strength: 10% (Max: 30%)Duration: 180 seconds
(Max: 30%) and 10% Status DefenseDownStack.pngDEF Down (Stackable)DEF is lowered (Stackable)
Strength: 10% (Max: 30%)Duration: 180 seconds
(Max: 30%).
Npc m 3040143000 01.jpg
Mary (Holiday) Rarity SSR.png Label Element Light.png Label Element Any.png Icon Support Skill.png 
JoybringerChance to get bonus treasure at the end of the battle
Yes No No Chance to get bonus treasure at the end of the battle.
Npc m 3040214000 01.jpg
Medusa Rarity SSR.png Label Element Earth.png Label Element Earth.png Icon Support Skill.png 
Your Life's Not Just YoursWater damage reduction to Earth allies based on their number of Status Wasteland Crest.pngWasteland CrestEarth magic is amplified (Max: 5 / Can't be removed)
.
(Water damage reduction takes effect even when Medusa is a sub ally.)
Yes Yes No Water DMG reduction to earth allies based on their number of Status Wasteland Crest.pngWasteland CrestEarth magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3030161000 01.jpg
Miria Akagi Rarity SR.png Label Element Fire.png Label Element Any.png Icon Support Skill.png 
Let's Play Together!You can do it! I'm right behind you!
(When Sub Ally: At the start of each turn, ~33% chance to cast Wish for Joy.)
No No No At the start of each turn, ~33% chance to cast Wish for Joy (All allies gain Status AttackUp.png10% ATK UpATK is boosted
Strength: 10%Duration: 1 turn Stacking: Unique
.)
Npc m 3040169000 01.jpg
Nier Rarity SSR.png Label Element Dark.png Label Element Dark.png Icon Support Skill.png 
Death ReversedWhen Sub Ally: When above 25% HP and Dark element, Main Character can withstand lethal damage (Leaves 1 HP).
No No Yes When above 25% HP and Dark element, Main Character can withstand lethal damage (Leaves 1 HP).
Npc m 3040279000 01.jpg
Percival (Light) Rarity SSR.png Label Element Light.png Label Element Light.png Icon Support Skill.png 
Lord of Flames AglowBoost to Light allies' skill specs based on their number of Status Aurora Crest.pngAurora CrestLight magic is amplified (Max: 5 / Can't be removed)
.
(Takes effect even when Percival is a sub ally.)
Yes Yes No Boost to Light allies' skill specs based on their number of Status Aurora Crest.pngAurora CrestLight magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3030270000 01.jpg
Philosophia (SR) Rarity SR.png Label Element Light.png Label Element Any.png Icon Support Skill.png 
I Must Keep ThinkingWhen Sub Ally: 5% Dark damage reduction to all allies.
No No No 5% Dark damage reduction to all allies.
Npc m 3040265000 01.jpg
Rei Rarity SSR.png Label Element Dark.png Label Element Dark.png Icon Support Skill.png 
Loving Mother30% boost to C.A. damage and 10% boost to C.A. damage cap for Dark allies against foes with Status 6803.pngCelestial VisionBoost to DMG taken (Can't be removed)
Local status effect
.
(Takes effect even when Rei is a sub ally.)
Yes No No 30% boost to C.A. damage and 10% boost to C.A. damage cap for Dark allies against foes with Status 6803.pngCelestial VisionBoost to DMG taken (Can't be removed)
Local status effect
.

Status 6803.pngCelestial VisionBoost to DMG taken (Can't be removed)
Local status effect
is inflicted by Rei's charge attack, Skill charge attack.png Clairvoyant BlissRemove 1 buff from a foe.
Inflict Status 6803.pngCelestial VisionBoost to DMG taken (Can't be removed)
Strength: 10% (Damage cap: 30,000)Base Accuracy: 200%Duration: IndefiniteLocal status effect
, Status DebuffResDown.png15% Debuff Res. DownDebuff resistance is lowered
Strength: 15%Base Accuracy: 120%Duration: 180 seconds
, Status LightAtkDown.png30% Light ATK DownLight ATK is lowered
Strength: 30%Base Accuracy: 120%Duration: 180 seconds
, Status DoubleDown.png100% DA DownDouble attack rate is lowered
Strength: 100%Base Accuracy: 120%Duration: 180 seconds
, and Status TripleDown.pngTA DownTriple attack rate is lowered
Base Accuracy: 120%Duration: 180 seconds
.
.

Status 6803.pngCelestial VisionBoost to DMG taken (Can't be removed)
Local status effect
provides supplemental damage (Max: 30,000) to all allies' attacks, regardless of element, even when Rei is switched to a sub ally.

Rei can switch places with a sub ally using Ability m 1110 3.png MokshaSwitch positions with a sub ally.
(When switching with a Dark ally: Take control of the ally, granting them Status 6801.pngMokshaATK, triple attack rate, DMG cap, and dodge rate are boosted / DEF is lowered (Can't be removed)
Strength: 30% ATK Up, guaranteed triple attacks, 20% DMG Cap Up, ~10% Dodge Rate Up, and 50% DEF DownMultiplier: PerpetuityDuration: Indefinite
.)
.

Npc m 3030267000 01.jpg
Richard (SR) Rarity SR.png Label Element Dark.png Label Element Any.png Icon Support Skill.png 
Good, Better, Best Luck!1% boost to item drop rate
Yes No No 1% boost to item drop rate Stacks with Tien's Icon Support Skill.png Treacherous Trigger100% Status Bounty.pngBountyItem drop rate is boosted
success rate. 5% boost to item drop rate.
At level 90:
Boost to item drop rate increased to 10%. Also grants 100% / 10% boost to all allies' critical hit rate against foes in break.100% chance of dealing 10% more damage.
.
Npc m 3040008000 01.jpg
Sarunan Rarity SSR.png Label Element Light.png Label Element Light.png Icon Support Skill.png 
Kazann's ProtectionDark damage reduction to Light allies based on their number of Status Aurora Crest.pngAurora CrestLight magic is amplified (Max: 5 / Can't be removed)
.
(Takes effect even when Sarunan is a sub ally.)
Yes Yes No Dark damage reduction to Light allies based on their number of Status Aurora Crest.pngAurora CrestLight magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040250000 01.jpg
Seruel (Holiday) Rarity SSR.png Label Element Wind.png Label Element Wind.png Icon Support Skill.png 
Crownless ProtectorEarth damage reduction to Wind allies based on their number of Status Typhoon Crest.pngTyphoon CrestWind magic is amplified (Max: 5 / Can't be removed)
.
All Wind allies start battle with Status Veil.pngVeilDebuffs will be nullified (1 time)
"Veil" is an unofficial name used by the wiki for this status effect. Its actual in-game name is "Immune."
.
(Takes effect even when Seruel is a sub ally.)
Yes Yes No Earth damage reduction to Wind allies based on their number of Status Typhoon Crest.pngTyphoon CrestWind magic is amplified (Max: 5 / Can't be removed)
.

All Wind allies start battle with Status Veil.pngVeilDebuffs will be nullified (1 time)
"Veil" is an unofficial name used by the wiki for this status effect. Its actual in-game name is "Immune."
.

Npc m 3030191000 01.jpg
Sevastien Rarity SR.png Label Element Wind.png Label Element Any.png Icon Support Skill.png 
Grandbutler Knows BestWhen Sub Ally: Refresh 3% of all allies' HP at the end of a turn (Healing cap: 150).
No No No Refresh 3% of all allies' HP at the end of a turn (Healing cap: 150). Doesn't stack with Katzelia's Icon Arcarum Sub Support Skill.png Judgement ReversedWhen Sub Ally:
Refresh 5% of Wind allies' HP after each turn when not debuffed (Healing cap: 350).
30% boost to Wind allies' ATKPerpetuity modifier when debuffed.
.
Npc m 3040187000 01.jpg
Silva (Light) Rarity SSR.png Label Element Light.png Label Element Light.png Icon Support Skill.png 
Bullet BurstWhen Sub Ally: 200% bonus Light damage to a foe upon the chain burst Ascension (Damage cap: ~600,000).
No No No 200% bonus Light damage to a foe upon the chain burst Ascension (Damage cap: ~600,000). Silva (Light) can switch places with a sub ally using Ability Blind Spot.png Blind SpotSwitch out with a sub ally. Ally gains Status Backup Fire.pngBackup FireBonus DMG will be dealt upon attacks (Can't be removed)
Duration: 3 turns
.
.
Npc m 3040024000 01.jpg
Sophia Rarity SSR.png Label Element Light.png Label Element Light.png Icon Support Skill.png 
Zeyen PriestessWhen Sub Ally: 200 HP boost to Light allies' healing cap.
No No No 200 HP boost to Light allies' healing cap.
Npc m 3040266000 01.jpg
Teena (Summer) Rarity SSR.png Label Element Fire.png Label Element Fire.png Icon Support Skill.png 
Sunlit SorceressBoost to Fire allies' C.A. specs based on their number of Status Hellfire Crest.pngHellfire CrestFire magic is amplified (Max: 5 / Can't be removed)
.
(Takes effect even when Teena is a sub ally.)
Yes Yes No Boost to Fire allies' C.A. specs based on their number of Status Hellfire Crest.pngHellfire CrestFire magic is amplified (Max: 5 / Can't be removed)
.
Npc m 3040152000 01.jpg
Tiamat Rarity SSR.png Label Element Wind.png Label Element Wind.png Icon Support Skill.png 
Anima DuctusAmplifySeraphic modifier damage against Earth foes by 20%.
At level 95:
Boost to Wind allies' skill specs based on their number of Status Typhoon Crest.pngTyphoon CrestWind magic is amplified (Max: 5 / Can't be removed)
.
(Boost to skill damage specs takes effect even when Tiamat is a sub ally.)
When Tiamat is a main ally: Also amplifiesSeraphic modifier all Wind allies' damage against Earth foes by 20%.
Yes Yes No Boost to Wind allies' skill specs based on their number of Status Typhoon Crest.pngTyphoon CrestWind magic is amplified (Max: 5 / Can't be removed)
.
Obtained at level 95.
Npc m 3040039000 01.jpg
Tien Rarity SSR.png Label Element Fire.png Label Element Any.png Icon Support Skill.png 
Treacherous Trigger100% Status Bounty.pngBountyItem drop rate is boosted
success rate. 5% boost to item drop rate.
At level 90:
Boost to item drop rate increased to 10%. Also grants 100% / 10% boost to all allies' critical hit rate against foes in break.100% chance of dealing 10% more damage.
Yes No No 5% boost to item drop rate. At level 90: Boost to item drop rate increased to 10%. Stacks with Richard (SR)'s Icon Support Skill.png Good, Better, Best Luck!1% boost to item drop rate.
Npc m 3030259000 01.jpg
Yaia (Holiday) Rarity SR.png Label Element Wind.png Label Element Any.png Icon Support Skill.png 
Jingle BellsSanta's on his way!
(When Sub Ally: Chance for all main allies to gain Status Hype1.pngHypeATK is boosted
Duration: 2 turns
.)
No No No Chance for all main allies to gain Status Hype1.pngHypeATK is boosted
.
Npc m 3020072000 01.jpg
Young Cat (Event) Rarity R.png Label Element Any.png Label Element Any.png Icon Support Skill.png 
Mini SkyfarerWhen Sub Ally: 5% boost to all allies' DEF. 5% chance to give Status Uplift.pngCharge Bar +10%Instantly boosts Charge Bar by 10%
Strength: 10%
to all allies at end of turn.
No No No 5% boost to all allies' DEF.

5% chance to give Status Uplift.pngCharge Bar +10%Instantly boosts Charge Bar by 10%
Strength: 10%
to all allies at end of turn.

Npc m 3040075000 01.jpg
Zahlhamelina Rarity SSR.png Label Element Fire.png Label Element Fire.png Icon Support Skill.png 
Solar DeflectionWind damage reduction to Fire allies based on their number of Status Hellfire Crest.pngHellfire CrestFire magic is amplified (Max: 5 / Can't be removed)
.
(Wind damage reduction takes effect even when Zahlhamelina is a sub ally.)
Yes Yes No Wind damage reduction to Fire allies based on their number of Status Hellfire Crest.pngHellfire CrestFire magic is amplified (Max: 5 / Can't be removed)
.

Ally-Specific Support Skills

Some characters have Support Skills or Extended Mastery Support Skills that activate when any version of another specific character is present as a main ally or a sub ally.

Icon Name Rarity Element Support Skill Activated by
Npc m 3030248000 01.jpg
Farrah (Summer) Rarity SR.png Label Element Water.png Icon Support Skill.png 
Together with Katalina!15% boost to ATKNormal modifier when KatalinaAny version is in the party.
Katalina
Katalina (Grand)
Katalina (Promo)
Katalina (Summer)
Npc m 3030108000 01.jpg
Lancelot (Event) Rarity SR.png Label Element Water.png Icon Support Skill.png 
Knight of the WoundedBoost to DEF when Vane is in the party.
Vane
Vane (Event)
Vane (SSR)
Npc m 3020031000 01.jpg
Lowain Rarity R.png Label Element Dark.png Icon Extended Mastery Support Skill.png 
Extended Mastery Support SkillBoost to ATK when Katalina is in the party
Katalina
Katalina (Grand)
Katalina (Promo)
Katalina (Summer)
Npc m 3030123000 01.jpg
Lowain (Event) Rarity SR.png Label Element Water.png Icon Extended Mastery Support Skill.png 
Extended Mastery Support SkillBoost to multiattack rate when Katalina is in the party
Katalina
Katalina (Grand)
Katalina (Promo)
Katalina (Summer)
Npc m 3020041000 01.jpg
Lowain (Summer) Rarity R.png Label Element Dark.png Icon Extended Mastery Support Skill.png 
Extended Mastery Support SkillBoost to ATK when Katalina is in the party
Katalina
Katalina (Grand)
Katalina (Promo)
Katalina (Summer)
Npc m 3030093000 01.jpg
Malinda (Event) Rarity SR.png Label Element Any.png Icon Support Skill.png 
Friendship10% boost to charge bar upon starting battle when VaniaAny version. is in the party
Vania
Vania (SR)
Npc m 3030039000 01.jpg
Noa Rarity SR.png Label Element Light.png Icon Support Skill.png 
Promise of an Old Friend10% boost to ATK and boost to debuff success rate when RackamAny version is an ally.
Rackam
Rackam (Grand)
Rackam (Holiday)
Npc m 3030129000 01.jpg
Stan (Event) Rarity SR.png Label Element Dark.png Icon Extended Mastery Support Skill.png 
Extended Mastery Support SkillBoost to multiattack rate when Aliza is in the party
Aliza
Aliza (Event)
Aliza (Water)
Npc m 3030019000 01.jpg
Vira Rarity SR.png Label Element Dark.png Icon Support Skill.png 
O KatalinaBoost to ATK and DEF when Katalina is in the party.
Icon Extended Mastery Support Skill.png 
Extended Mastery Support SkillBoost to multiattack rate when Katalina is in the party
Katalina
Katalina (Grand)
Katalina (Promo)
Katalina (Summer)
Npc m 3040043000 01.jpg
Vira (SSR) Rarity SSR.png Label Element Dark.png Icon Support Skill.png 
Katalina Katalina KatalinaWhen KatalinaAny version is a party member:
15% boost to ATKNormal Modifier and 1-turn cut to skill cooldowns.
Katalina
Katalina (Grand)
Katalina (Promo)
Katalina (Summer)
Npc m 3030056000 01.jpg
Volenna (Event) Rarity SR.png Label Element Earth.png Icon Support Skill.png 
Sara's BodyguardBoost to ATK and DEF when Sara is an ally.
Sara
Sara (Event)
Sara (Light)
Sara (Summer)

References

  1. @AdlaiT PSA: Support skills do not work from the backline unless explicitly stated https://www.reddit.com/r/Granblue_en/comments/f11cl5/psa_support_skills_do_not_work_from_the_backline/