Rigby tries to rid of baby ducks that imprint on him, and instead turns them into karate masters when they learn to mimic his chopping action. A furry sensei bringing up 4 small, unlikely cute animals as warriors reminds you of another favorite, no? regular show, teenage mutant ninja turtles, tmnt, rigby, baby ducks, ducks, splinter, mash up, crossover, cross over, cartoon network, cn, karate, martial arts, cute, cartoon, show, tv, television