One Piece Chapter 29, page 12: Slopes

Usopp tries to walk away, saying he's going to rest, but Nami pats him on the back and tells him to keep up the good work. Suddenly, a skinny pirate with cat ears, a hunched back, wild spiky hair, and claw-like gloves leaps over the spikes and attacks them. Nami gasps in terror as the cat-eared pirate slashes at them, shouting "You're blocking our way! Now die!".