Guffo

Guffo is a living can of beans who resides in Cloud Cuckooland's trash can. When Kazooie enters alone, he's delighted to have a guest, since he obviously has never had one. He's facing eviction due to an abominable amount of germs in his domicile, so he asks Kazooie to get rid of them. This leads to another mini-game similar to several in Banjo-Tooie where the object is to defeat color-coded enemies to reach a certain number of points. When the goal is reached, he rewards Kazooie with a Jiggy and a Cheato Page.

In Banjo-Kazooie: Nuts & Bolts, Guffo's trash can is on display in Banjoland with other similar bean cans resembling him around it. A photo of him also appears in the same level.

Banjoland Info
"Rubbish Bin. Also known as the Trash Can. Home to a discarded can of bean named Guffo in Banjo-Tooie, who needed Kazooie's help in dealing with an unfortunate (if unsurprising) germ infestation."

Trivia

 * Guffo is made by "Chimps" producer, as can be seen in a blurred print at the top of his label.
 * If Kazooie were to fire a Clockwork Kazooie Egg into the bottle of Jolly's Juice and exit through the hole and re-enter, Guffo will exclaim every once in a while, "I didn't see you enter through the front door! Please leave and enter properly.", although Kazooie herself doesn't actually leave the trash can. As this is the expected behavior when Banjo enters from the rear using the Shack Pack, it is apparently a bug in that the game assumes that anyone entering through the rear is Banjo.

Muffo