Leaky

Leaky is a broken pail (or bucket) in Treasure Trove Cove in Banjo-Kazooie. As his name implies, Leaky can't retain water very well. This problem can be fixed by a pair of Blue Eggs. Leaky then empties the water from around the Sandcastle, allowing Banjo and Kazooie to use its floor to enter cheats (and get a Jiggy).