From Brotato Wiki
Mutation 0
Charges to the player every 2 seconds, shooting projectiles to its left and right during the charge.
Mutation 1
Charges to the player every 1.3 seconds for shorter distance, shooting projectiles to its left and right during the charge, at the start of its charge fires extra 2 projectiles.
Reward
Drops a crate with a guaranteed drop of a legendary item in it.