Roysten the Goldfish

Roysten is Banjo's pet Goldfish. He appears in all the games, but he is mostly a background character, except in Banjo-Tooie. In the 1st game, he appears in Banjo's house on the shelf, swimming around unhappily, and tapping the side of his bowl. Near the very ending of the game, Mumbo is seen grilling Roysten on the Barbeque.

In Banjo-Tooie, Roysten got knocked off the Barbeque when Gruntilda blew up Banjo's house, and trapped under a weighty boulder that must be smashed using the Bill Drill ability. Once Roysten is rescued and released into the moat around Spiral Mountain, he teaches Banjo and Kazooie how to swim faster, and he also doubles their air capacity. When Mrs. Bottles forces Bottles to eat her burnt dinner, Roysten can be seen all burnt on the plate, blinking.