Joe

Joe is a recruitable character that can be found near the end of Nerd City's road.

You must give him a can of Bebis to recruit him.

His quirk is being the opposite version of Zack, having elemental moves that Zack doesn't have and vice versa, while having the option of raising the defense of your team, instead of Zack's option of lowering the defense of the enemies.

The game itself describes him as:

"Everybody hates him but nobody has the guts to tell him."