One Piece Chapter 2, page 14: THEY CALL HIM "STRAW HAT LUFFY"

Koby gains confidence, shouting, "WELL, I'M GONNA DO IT!!! WHAT'VE I GOT TO LOSE!? I DON'T WANNA BE A MISERABLE CABIN BOY MY WHOLE LIFE!! I'LL JOIN THE NAVY... AND THEN... I'LL CAPTURE ALVIDA!! BETTER TO RISK MY LIFE TRYING TO ACHIEVE MY DREAM!" Suddenly, a voice booms, "WHO ARE YOU GOING TO CAPTURE, RUNT!?" as Alvida's iron mace crashes down with a massive "KRESH!", completely destroying Koby's coffin boat. Koby screams, "AAAH!!! MY BOAT!" Alvida glares at him, saying, "YOU LITTLE SNEAK! DID YOU REALLY THINK YOU COULD ESCAPE FROM ME!?"