Banjo-Kazooie is a Level Pack character from the franchise Banjo-Kazooie.
Background from Banjo-Kazooie Wiki
A good hearted, well mannered and sweet natured honey-bear. He's always seen wearing bright yellow shorts and a blue packpack for carrying Kazooie around. As seen in the opening scene, he's an experienced banjo player, he cares a lot for his best friend and those in need and sometimes shares a bond or two with his little sister, Tooty. Unlike his sister, Banjo's not really into adventuring.