Filthy the Foot is an anthropomorphic foot that serves as the figure for Chalawunga, a holiday similar to Christmas. He gives children sparkly golden eggs for the holidays if they are good (but is quite lazy at it).
Filthy the Foot, as previously mentioned, is quite lazy when it comes to giving children sparkly golden eggs for Chalawunga. In "Happy Chalawunga!", he forgot to give Pig his egg, and when Pig finally found him, Filthy sent him to deliver the eggs instead. He gave him powers by touching him with a magic toilet wand. Pig only delivered a few presents, however.
Filthy the Foot is literally a foot with arms. He has a unibrow and a long beard (possibly made from fungus).