Executioner Katerin

Leader Skill: Heart of Darkness

200% boost to Atk, 100% boost to Def, max HP and 30% boost to critical hit rate of Dark types, hugely boosts damage against status afflicted foes, enormously boosts Dark elemental damage, 15% damage reduction from Light, Dark types & raises Atk parameter limits to 130000
175% boost against afflicted foes & 225% elemental damage

Extra Skill: Blood on My Hands

Spark damage slightly boosts BB gauge for all allies when Katerin's Torment or BB Gauge Sphere is equipped, slightly boosts Dark elemental damage for all allies, greatly boosts Dark elemental damage, 40% boost to Atk, Def each turn (up to 3 turns) & resistance against 1 KO attack when HP is below 40%
Fills 1-2 BC, 20% elemental damage for all allies & 100% elemental damage for self

Brave Burst: Marked for Execution

10 combo massive Dark attack on single foe (or probable 5% damage of foe's max HP), 8 combo powerful Dark attack on single foe (damage relative to remaining HP), enormously boosts Dark elemental damage for 3 turns, probable huge 2 turn Atk, Def reduction infliction, boosts OD gauge & probability of purging Curse negation effect from single foe

Buff Values
Active Effect	Potency	Buff Duration	Target
Proportional Damage	10% chance of dealing 5% of enemy HP as damage	—	Single enemy
HP-scaled Damage	200% + 300% * (current HP / base max HP) damage modifier	—	Single enemy
Effect Purge	25% chance of purging effects: Curse Negation	—	Single enemy
Dark Elemental Damage Boost	225% boost to Dark elemental damage	3 turns	All allies
Attack Reduction	40% chance of reducing Atk by 60%	2 turns	All enemies
Defense Reduction	40% chance of reducing Def by 60%	2 turns	All enemies
Instant OD Fill	Fills 12% of the OD gauge	—	—

Super BB: Lingering Resentment

20 combo powerful Dark attack on all foes (damage relative to remaining HP), 3 combo powerful Dark attack on single foe, enormously boosts Dark elemental damage for 3 turns, hugely boosts Atk and enormously boosts critical hit rate for 3 turns, enormously boosts Atk, Def relative to max HP for 3 turns & probability of purging Sickness negation effect from single foe

Buff Values
Active Effect	Potency	Buff Duration	Target
HP-scaled Damage	300% + 600% * (current HP / base max HP) damage modifier	—	All enemies
Regular Damage	900% damage modifier	—	Single enemy
Attack Boost	250% boost to Atk	3 turns	All allies
Critical Hit Rate Boost	60% boost to critical rate	3 turns	All allies
Effect Purge	35% chance of purging effects: Sick Negation	—	Single enemy
Dark Elemental Damage Boost	225% boost to Dark elemental damage	3 turns	All allies
Attack Conversion Boost	Boosts Atk relative to 70% of HP	3 turns	All allies
Defense Conversion Boost	Boosts Def relative to 70% of HP	3 turns	All allies

Ultimate BB: Stygian Guillotine

11 combo massive Dark attack on single foe (or probable 7% damage of foe's max HP), 11 combo massive Dark attack on single foe (25% active Pierce on Light, Dark types), enormously boosts Atk, Def relative to max HP for 3 turns, enormous 3 turn Atk, Def reduction infliction, enormously boosts Dark elemental damage for 4 turns & adds random status ailment infliction to attack for 4 turns

Buff Values
Active Effect	Potency	Buff Duration	Target
Proportional Damage	50% chance of dealing 7% of enemy HP as damage	—	Single enemy
Piercing Damage	1500% damage modifier, deals 25% piercing damage against Light and Dark enemies	—	Single enemy
Attack Reduction	100% chance of reducing Atk by 90%	3 turns	All enemies
Defense Reduction	100% chance of reducing Def by 90%	3 turns	All enemies
Dark Elemental Damage Boost	500% boost to Dark elemental damage	4 turns	All allies
Attack Conversion Boost	Boosts Atk relative to 150% of HP	3 turns	All allies
Defense Conversion Boost	Boosts Def relative to 150% of HP	3 turns	All allies
Poison Infliction Added to Attack	Added to attack: 100% chance of inflicting Poison	4 turns	All allies
Injury Infliction Added to Attack	Added to attack: 100% chance of inflicting Injury	4 turns	All allies
Sick Infliction Added to Attack	Added to attack: 100% chance of inflicting Sick	4 turns	All allies
Weak Infliction Added to Attack	Added to attack: 100% chance of inflicting Weak	4 turns	All allies
Curse Infliction Added to Attack	Added to attack: 100% chance of inflicting Curse	4 turns	All allies
Paralysis Infliction Added to Attack	Added to attack: 100% chance of inflicting Paralysis	4 turns	All allies

Hidden buff value(s) is/are based on unit's max levelled BB/SBB (10).
Value(s) may be lower if the level is not at max.

Bonding

Dual BB: Stygian Despair

48 combo grand dual attack on all foes (damage relative to remaining HP), boosts Atk, Def relative to max HP, critical damage, Dark elemental damage, max HP, 100% Light, Dark damage reduction, inflicts Atk, Def reduction & adds status ailment infliction to attack

Elemental Synergy: Abyss

Deals piercing max HP% DoT to single Light foe

Bonded Unit Partner:

Titanbane Primus Keres

For more information on the unit's Dual Brave Burst (including buff values and frame data),
please check their respective DBB pages.