One Piece Chapter 31, page 13: THE TRUTH

The two figures land gracefully on the shore. The man with heart-shaped sunglasses greets them: "HELLO, NYABAN BROTHERS". The two brothers are introduced: Buchi, a large, chubby man with cat ears, striped pants, and a bell around his neck, who asks, "WHAT'S UP?"; and Sham, a slim, hunched man with green hair, cat ears, a bow tie, and sharp claws, who asks, "CAPTAIN, YOU CALLED FOR US?". Caption boxes identify them as "KURO NEKO'S PIRATE CREW: SHIP GUARDIAN BUCHI" and "KURO NEKO'S PIRATE CREW: SHIP GUARDIAN SHAM".