Molly Bobolly is a character who appears in Loose Ends (chapter)[1].
Molly is the daughter of Sally Bobolly. She adopts Bun-bun after he briefly loses his memories following an explosion in Santa Claus's workshop, renaming him "Mr. Fuzzbutt". When Bun-bun regains his memory, he ties up Molly and Sally and leaves them suspended over a pool of piranha.
An alternate version of Molly Bobolly exists in the Dimension of Rain. See Molly Bobolly (DoR).