The Great Rumpus Cat appears in the poem "Of the Awefull Battle of the Pekes and the Pollicles.
In Cats, the Jellicles put on a small play when their leader, Old Deuteronomy, arrives.
The story is about how Rumpus Cat stopped two neighboring dog clans, the Pekes and Pollicles, from fighting.
[2] Steven Wayne played the part in the original London West End production, doubling as George, and Kenneth Ard, doubling as Macavity created the part on Broadway.
It appears, as his costume in the film version suggests, that he is considered a type of superhero in the Jellicle society.