Boxing Kangaroos

They were two kangaroos, one adult and joey, that were part of Condor's ninja animal team. The two kangaroos both wore boxing gloves and were both skilled in boxing which prevented Rock Lee from hitting them with his taijutsu. Though in the end, Lee managed to defeat the kangaroos and they went fleeing the battle.

Trivia

 * The kangaroos bear a resemblance to Roger and Roger Jr. from the Tekken franchise.