Volcano is an original character from the My Hero Academia: Clash! Heroes Battle arcade game.
Quirk and Abilities
He can burn his fat to produce a lava-like substance as hot as magma, and eject it from his body. His right hand can scatter wide range magma, while from his left hand extrudes lava lasers.
The devices on his hands and shoulders allows him to fire farther, and the shoulder pores seem to help him regulate body temperature. His soles can withstand heat, allowing him to walk on his own lava. Located in the middle of his mask is a mercury thermometer for a unknown purpose. (Most likely also for the purpose of regulating body temperature.)