George Moppet is Louise "Little Lulu" Moppet's father, married to Martha Moppet, forming Lulu's parental unit. He occasionally finds himself the subject of Tubby Tompkins' amateur detective pursuits, typically triggered by misunderstandings or Tubby's imaginative probes into ordinary events. In Moppet family storylines, Martha sometimes mistakenly punishes Lulu for domestic mishaps like misplaced or damaged household items. Subsequent investigations, often led by Tubby in his self-appointed detective capacity, reveal George was actually responsible—having borrowed, misplaced, or broken the objects Lulu was blamed for. George and Martha also appear as characters within the fictional stories Lulu invents to entertain her neighbor, Alvin Jones, where they are depicted as members of a poor family facing everyday challenges.