Mugen (Halloween)/Strategy

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Ratings

Mugen (Halloween)			07 09
	Edit rating Role: Support Gives Light allies bonus damage if their maximum health is reduced. Mugen has sources of 30% Max HP Lowered (Stackable / Max: 90%)Max HP is lowered (Stackable / Can't be removed) Strength: 30% (Max: 90%)Duration: IndefiniteAt 100%, leaves 1 max HP himself, and this additionally pairs very well with Nehan. Song of SweetmeatsAll Light allies gain 30% Light ATK UpLight ATK is boosted Strength: 30%Duration: 5 turns, 100% / 20% Critical Hit Rate UpAttacks made with elemental superiority have a chance to deal boosted DMG Strength: 100% chance of dealing 20% more damage.Duration: 5 turns, 15% DMG Cap UpMaximum amount of DMG that can be dealt per hit is boosted Strength: 15%Duration: 5 turns, and 20% DMG AmplifiedDMG for normal attacks and counterattacks is amplified Strength: 20%Duration: 5 turns. (Inflict 30% Max HP Lowered (Stackable / Max: 90%)Max HP is lowered (Stackable / Can't be removed) Strength: 30% (Max: 90%)Duration: IndefiniteAt 100%, leaves 1 max HP on target allies.) grants allies several strong buffs for 5 turns, which synergises well with burst setups. Can permanently receive attacks for a selected ally with Substitute (Select)Receives foe attack in place of an ally (Can't be removed) Duration: Indefinite, but can only activate the skill once. Mugen wants to be attacked to activate his multi-hit nuke, and also gains defensive buffs to help his longevity.

Site	RatingThe character's overall rating out of 10.	GrindingThe character's general efficiency in repeatedly clearing menial content with an emphasis on real-time speed. GW Max Grade: SS KG Max Grade: SS	Full AutoThe character's general performance in Full Auto parties. GW Max Grade: SS KG Max Grade: SS	High DifficultyThe character's capability relative to the game's most difficult content. GW Max Grade: SS KG Max Grade: SS	Last Update
GameWith	9.8	SS	S	B	2026-08-16
Kamigame	10	SS	A	A	2024-06-15

Extended Mastery Perks

GamewithKamigame

Mugen (Halloween)			Stars: 6	EMP: 21
ATK ★☆☆ ★★☆ ★★★ +500 +800 +1000	DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	HP ★☆☆ ★★☆ ★★★ 250 500 750	Dark Damage Down ★☆☆ ★★☆ ★★★ 2% 4% 5%
☆☆☆	☆☆☆	☆☆☆	☆☆☆	☆☆☆
ATK ★☆☆ ★★☆ ★★★ +500 +800 +1000	DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	HP ★☆☆ ★★☆ ★★★ 250 500 750	Critical Hit ★☆☆ ★★☆ ★★★ 12% chance for 12% more DMG 20% chance for 20% more DMG 25% chance for 25% more DMG	Dark Damage Down ★☆☆ ★★☆ ★★★ 2% 4% 5%
☆☆☆	☆☆☆	☆☆☆	★★★	☆☆☆
DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	HP ★☆☆ ★★☆ ★★★ 250 500 750	Hostility Up ★☆☆ ★★☆ ★★★ +5 +8 +10	Boost to DEF and hostility.
☆☆☆	☆☆☆	☆☆☆	★★★	☆☆☆
Last update: 2024-05-28

Gamewith's recommended EMP build for Mugen.

Priorities

Get Critical Hit to enhance Mugen's strength, followed by Hostility to increase the chance of triggering  Happy Pancakes+10 boost to hostility.
6-hit, 100% Light damage to random foes (Damage cap: ~100,000 per hit) upon taking damage..
Consider taking DEF to enhance longevity when pairing up with Florence (Halloween), or when utilizing his Cloaked GuardianGain Substitute (Select)Receives foe attack in place of an ally (Can't be removed)
Duration: Indefinite, 30% Dark DMG LoweredDark DMG is lowered (Can't be removed)
Strength: 30%Duration: IndefiniteDark DEF Up. Not a Damage Cut.
Reduces Dark damage taken on a multiplier
separate from Damage Cuts., and Dark SwitchElemental DMG from foes turns into dark DMG (Can't be removed)
Duration: Indefinite.
(Only substitutes for a selected ally. Can't recast.).

Mugen (Halloween)			Stars: 9	EMP: 45
ATK ★☆☆ ★★☆ ★★★ +500 +800 +1000	DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	HP ★☆☆ ★★☆ ★★★ 250 500 750	Dark Damage Down ★☆☆ ★★☆ ★★★ 2% 4% 5%
★★★	☆☆☆	☆☆☆	☆☆☆	☆☆☆
ATK ★☆☆ ★★☆ ★★★ +500 +800 +1000	DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	HP ★☆☆ ★★☆ ★★★ 250 500 750	Critical Hit ★☆☆ ★★☆ ★★★ 12% chance for 12% more DMG 20% chance for 20% more DMG 25% chance for 25% more DMG	Dark Damage Down ★☆☆ ★★☆ ★★★ 2% 4% 5%
★★★	☆☆☆	☆☆☆	★★★	☆☆☆
DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	DEF ★☆☆ ★★☆ ★★★ 5% 8% 10%	HP ★☆☆ ★★☆ ★★★ 250 500 750	Hostility Up ★☆☆ ★★☆ ★★★ +5 +8 +10	Boost to DEF and hostility.
☆☆☆	☆☆☆	☆☆☆	☆☆☆	☆☆☆
Last update: 2024-06-15

Kamigame's recommended EMP build for Mugen.

Resources

• Reddit Character Discussion (2023-10-17)
• Reddit Character Discussion (2024-03-31)
• Reddit Character Discussion (2025-02-21)