A younger version of Silvers Rayleigh appears briefly in a flashback, though his true identity as the "Dark King" and first mate of the Roger Pirates is only revealed much later in the series.
Watch a breakdown of the epic showdown between Luffy and Buggy as the Orange Town Arc concludes: One Piece (Dub) Episode 8
Luffy debuts his "Bazooka" attack to defeat Buggy. A younger version of Silvers Rayleigh appears briefly
Buggy reveals his shared history with Red-Haired Shanks, blaming Luffy’s mentor for his accidental consumption of the Bara Bara no Mi (Chop-Chop Fruit), which took away his ability to swim. One Piece (Dub) Episode 8