People The Contestants Have Never Beaten

Raphael
Every

Crazy Skater Dude
Every

Casey Jones
Raph and CSD

Beth
Every

Leatherhead
Every

Shredder
Every

Mini Raph
Every

Slash
Every

Splinter
Every

Mini Don
Every

Mini Leo
Raph, Mini Raph, Leatherhead, Slash

Krang
Mini Raph

Beobop
Letaherhead, Mini Don and Mini Raph

Mini Mike
Raph, M. Raph, Slash, Leatherhead

Don
Raph, Slash, Leatherhead, none of the minis