From game manual for Golden Axe
A barbarian from the plains of Yuria, Ax-Battler is a fearsome warrior motivated by hated of Death Adder. Soon after the invading armies arrived in Yuria they put Ax-Battler's mother toa horrible and lingering death. Returning from a quest, Ax-Battler was treated to the sound of his mother's dying screams - and will not ready until he has heard the song screams of Death Adder.
Ax-Battler can command Volcano Magic, whe which can reach up to four levels of power depending on how many magic portion pots he is carrying when he cat casts a destroying spell.