Samurai Jack Season 2 Episode 3

Jack is kidnapped and placed in a chain gang of warriors chosen to battle in the Dome of Doom, against the Smackback Ultimate Champions. Even without his sword, Jack defeats Gordo and the Aqualizer, and then must defeat the massive but ticklish Sumoto with the aid of his top knot. In desperation the Ringleader sends his remaining gladiators after Jack, who defeats them handily and forces the Ringleader to release the gladiator-slaves.