One Piece Chapter 34, page 7: Clahador the Butler

Luffy looks at Nami and says, "YOU...". Nami winks and replies, "I'M DOING IT FOR THE TREASURE!". Luffy bluntly responds, "TREASURE SHOULDN'T MATTER...". Nami snaps back, "THAT'S JUST YOUR CHARACTER!!" with the sound effect "DO-NN!!". Luffy turns and walks confidently up the slope toward Kuro and Jango, who are standing with the remaining Black Cat Pirates. Luffy chuckles, "HEH... EVEN THE EVIL BUTLER IS HERE...".