"Jimmy and his Grockle" was a strip that ran in The Dandy, originally appearing in the first issue, drawn by Jimmy Clark. It starred a boy with a dragon-like creature as a pet. The two characters appeared on the front cover of the first Dandy Monster Comic.
Before appearing in the Dandy a similiar strip appeared in the Rover in the 1920s under the name Jimmy Johnson's Grockle. This strip would also reappear in Sparky under the name My Grockle and Me this time drawn by George Drysdale.