Chester the Chimpanzee; Moveset.

Ability 1 - Bananza! Bananza would have all current party members gain the speed effect, and their attacks would do twice the damage WITHOUT the Attack Buff, so if paired, you could do some wild stuff!

Ability 2 - Banjo Band! Banjo Band would work quite a bit like Bash Jam and- uh- whatever the Defense Buff ability is called... But combining the two, while also dealing much more damage.

Ability 3 - Curtains! Curtains would pull 2 red starry curtains, directly from Chester's stage, over both of your party's. Blocking the enemies from attacking for a little while, while you can still attack!