A tall, silver-gray and black tabby, Munkustrap is second in command of the Jellicle tribe after Old Deuteronomy. He possibly is the part with the most singing in the entire musical, but the part also requires strong dancing and acting skills. Many people believe him to be Demeter's mate, and he acts as 'Jellicle Protector' to the younger cats during the Macavity scares. It has been thought that he, along with Rum Tum Tugger and Macavity (and also possibly Mistoffelees) is the son of Old Deuteronomy. He sings about the Jellicle Ball in "The Invitation To The Jellicle Ball," as well as most of "The Old Gumbie Cat" and "Old Deuteronomy," and the entirety of "The Awefull Battle of the Pekes and the Pollicles." With the help of Alonzo, he rescues Demeter from Macavity after Old Deuteronomy has been kidnapped, and fights Macavity, though he is eventually defeated and the other cats must step in to defeat Macavity.
Munkustrap is portrayed by Michael Gruber in the 1998 film.