"Jimmy" was a written-out character that was supposed to appear in The Lenny Lego Show (Not to be confused with the new successor series, The Lenny Leggo Show, set in an entirely different continuity). As this incarnation took place in a common bedroom, his role, as resident of the property, was to enter the room periodically, always completely oblivious to the characters around him being alive, regardless of their actions while he is in the room. By the time the show aired, however, his character was completely written out and he never appeared.