|First appearance:||"House of Bloo's"|
George Mucus is an imaginary friend who first appeared in "House of Bloo's". He apparently gets his arm cut off by Scissors, but it eventually heals.
In "The Trouble With Scribbles", George was reading in the library, when Bloo came up and pestered him for information about the house's secret door. He instantly ran off, not wanting to tell him anything about it.
- His name is based on the name of famous director of the Star Wars and Indiana Jones series, George Lucas.