Universes calling (a former FNF MHA crossover. This book is now mine.)

C. Keith's Quirk file:

Name: BF.

Quirk: shockwave, whenever he sings large and powerful energy waves are released from his body that will knock anyone off balance.

Drawbacks: he will become vulnerable and disoriented after usage.

Appearance: similar to the usual BF but partially stained with a black fluid almost like paint.