Loggo

Loggo is a talking toilet seen in both Banjo-Kazooie, Banjo-Tooie and Banjo-Kazooie: Nuts & Bolts.

Banjo-Kazooie
Loggo is found in the bathroom of Mad Monster Mansion, where he will offer to flush down Pumpkin Banjo to retrieve a Jiggy from the septic tank.

Banjo Tooie
Loggo has moved to Grunty Industries, where he complains about a clog. Perform the Bill Drill ability on Loggo to get the Cheato Page which is plugging his pipes. If the two talk to Loggo in Grunty Industries a second time before getting him unclogged, Kazooie mentions that he call a plumber, specifically, Mario (of Super Mario Bros. fame). However, Loggo doesn't believe that he does that kind of work anymore...

Nuts&Bolts
Loggo appears as a giant replica in an exhibit in Banjoland. The U-Bend needs to be filled with sheep and later acts as the hole in Mr. Fit's golf game.

Stop 'n' Swop
In Banjo-Kazooie, the Green Mystery Egg can be found on Loggo.