Each bunny has its own class, but they are mainly divided into 5 groups:
Balanced fighters with melee weapons - Orange, Yang
Fast fighters with light and ranged weapons - Fluffy, Blinky
Buffer and debuffer with few weapons - Sunny, Yin (except her who has a whip)
Unarmed mage - Jackalope
Tough fighters with cutting weapons - Ben, Valkiry
However Orange can wear gauntlets.