Katsuki Bakugo

100% boost to Atk, max HP, hugely boosts Fire elemental damage, hugely boosts critical damage & 10% damage reduction from Fire, Earth, Light, Dark types

15% boost to all parameters when All Might is in the same Squad, greatly boosts Atk relative to remaining HP and greatly boosts Fire elemental damage when Grenadier Bracers is equipped, greatly boosts critical damage & 40% additional damage reduction

BB

Explosive Speed Turbo

1 DC24

12 combo Fire attack on all foes (damage relative to remaining HP, enormously boosts own critical hit rate), considerably boosts own Atk relative to max HP for 3 turns, hugely boosts BB Atk for 3 turns, considerably boosts Atk, Def, Rec and enormously boosts critical hit rate of Fire types for 3 turns & boosts own max HP

SBB

Stun Grenade

1 DC27

14 combo powerful Fire attack on all foes (damage relative to remaining HP, enormously boosts own critical hit rate), 8 combo Fire attack on single foe (consecutive uses boosts damage, enormously boosts own critical hit rate), enormously boosts BB Atk for 3 turns, hugely boosts Fire elemental damage for 3 turns & greatly boosts critical damage for 3 turns

UBB

Howitzer Impact

1 DC30

19 combo massive Fire attack on all foes (damage relative to remaining HP, enormously boosts own critical hit rate), activates BB/SBB/UBB twice for 1 turn, enormously boosts Fire elemental damage for 3 turns, enormously boosts Atk, Def, Rec and critical hit rate for 3 turns & enormously boosts max HP