Sonic - Spindash
[For each tile moved, Sonic gains +1 damage. If Sonic has 6 more attack speed, than the opponent, then all his attacks occur first.]

Tails - Hit and Run
[Can use leftover move after attacking. Attacks deal +2 damage from 3+ range.]

Knuckles - Geoforce
[Knuckles converts terrain defense bonuses to str. Doubles if on mountain, peaks, hills, etc.]

Amy - Temper
[Can't think of anything]

Cream - Compassion
[Increases staff healing power by 5 per tier. Healing allies grants +3 res.]

Big - Bulwark
[As long as Big has full health, adjacent allies take 1/2 less damage from ranged attacks.]

Jet - Jetstream
[Always attacks first. Adds 1/5 of speed to attacks.]

Wave - Pragmatic
[When attacking at range, has +2 damage. Always switches to the appropriate weapon.]