Grunch Killjoy vs Ultan of the Shell

Overall comparison

HERO	Fraction	Element	Type	Rarity	Aura
Grunch Killjoy	Ogryn Tribes	Force	Support	Epic	Defence 30% Place: Crypts
Ultan of the Shell	Dark Elves	Spirit	Attack	Legendary	Attack 30% Place: All battles

Stats comparison

HERO	LVL	STARS	HP	ATK	DEF	SPD	C.RATE	C.DMG	RESIST	ACC
Grunch Killjoy	60	6	18000	969	1134	102	15	50	30	15
Ultan of the Shell	60	6	15525 -2475	1553 +584	991 -143	101 -1	15	63 +13	30	0 -15

Skills comparison

Grunch Killjoy	Mace of Foulness Formula: 3.6*ATK Attacks 1 enemy. Has a 40% chance of placing a [Block Buffs] debuff for 1 turn. Block Buffs	Kindle Soulfire Formula: 4.2*ATK Attacks all enemies. Has a 50% chance of placing a [Bomb] debuff that detonates after 1 turn. Cooldown: 5 Bomb	Hex Eater Formula: REL_TRG_DEBUFF_COUNT-1 Removes all debuffs from all allies, then places one 15% [Continuous Heal] buff for 1 turn on each ally for every debuff removed from them. Cooldown: 6 Continuous Heal 15%	Madcap [P] Formula: 0.1*MAX_STAMINA Fills the Turn Meters of all allies by 10% whenever a [Bomb] debuff detonates on an enemy.	-
Ultan of the Shell	Under the Skin Formula: 1.6ATK Formula: -0.5REL_TRG_RES Attacks 1 enemy 2 times. Each hit has a 50% chance of placing a 60% [Decrease DEF] debuff for 2 turns. Each hit will also ignore 50% of the target's RES if Oella is on the same team. If the target is under an [Increase DEF] buff, each hit has a 80% chance of removing it. This effect cannot be resisted. Decrease DEF 60%	Resurging Reversal Formula: (0.2HP)+(0.2HPremovedEffectsCount) Formula: (REL_TRG_SHIELDS_SUM_VALUE0.05)unappliedStatusEffectsCountByCurrentSkill Formula: 5ATK Formula: 0.2DMG_MULunappliedStatusEffectsCountByCurrentSkill Removes all debuffs from this Champion and heals them by 20% of their MAX HP. Heals this Champion by an additional 20% of their MAX HP for each debuff removed. Then, places a [Shield] buff on this Champion for 2 turns. The value of the [Shield] is proportional to this Champion's ATK. The value of the [Shield] also increases by 5% for each debuff removed. Finally, attacks 1 enemy. Will ignore [Shield] buffs. Damage increases by 20% for each debuff removed by this skill. Cooldown: 4 Shield	Somnolence Spores Formula: 4.1ATK Formula: -0.5REL_TRG_RES Formula: -0.5*REL_TRG_RES Attacks all enemies. Has a 100% chance of placing a [Sleep] debuff for 1 turn and a 30% [Decrease SPD] debuff for 2 turns. If Oella is on the same team, will place a [Stun] debuff instead of [Sleep], and ignore 50% of each target's RES. Fills this Champion's Turn Meter by 15% whenever a [Sleep] or [Stun] debuff placed by this skill expires. If Oella is on the same team, grants this Champion an Extra Turn. Cooldown: 5 Sleep Stun Decrease SPD 30%	Skill 76905name Formula: 0.15*MAX_STAMINA Skill 7000003 description	Metabolism [P] Has a 15% chance of decreasing the cooldown of one of this Champion’s skills by 1 turn every time they are healed by a [Continuous Heal] buff. The chance increases to 30% if Oella is on the same team.