some super ideas:
mar: mario dashes fowards a enemy and spins with a hammer, multi hitting , then slams the hammer, ground bouncing, jumps, vertically spins it, then crashes it into a ground, giving a slide down.
lui: thunder misfire (smash side B), on hit luis travels back and back and back until lui crashes into the floor, triple bouncing
gom: cool freestyle combo, ends with 3 flash kicks into a dive kick
son: rdy??? gu!!! son moves around with you controlling at light speed, ramming into enemies, ends when you hit a wall, where sonic just multi homing attacks into smashing spin kick