One Piece: Season 1, Episode 13

1 - 13: The Terrifying Duo! Meowban Brothers vs. Zoro!

The Straw Hats manage to take out most of the opposing Black Cat Pirates, so Jango orders the Nyaban Brothers to attack. Meanwhile, after getting hypnotized by Jango, Luffy gets himself stuck under the collapsed mast of the Black Cat Pirates' ship.