"The Littlest Gladiator" is an episode of Gladiator Academy.
Plot[]
While learning the latest gladiator moves from Rumpus, little Sinus inadvertently finds himself facing a burly, seven foot barbarian. Deciding to put his new skills to use, Sinus tries to take on the brute. To protect his beloved little brother, Rumpus comes to the rescue, smashing a pillar with his fist which clobbers the barbarian.