Munkustrap is the protector of the Jellicle tribe; he is brave, level-headed and dependable. As the tribe's second-in-command after Old Deuteronomy, he oversees the Jellicle Ball and ensures that everything runs smoothly. He functions as the show's main narrator, singing several songs and introducing many of the other cats. When Macavity attacks the tribe, it is Munkustrap who fights him off. Munkustrap's relationship with the other characters is depicted in the musical: he reveres Old Deuteronomy, watches out for the reckless younger members of his tribe.[2][3]
He is usually depicted onstage as a tall, grey tabby cat with a commanding presence.[3] The role is meant to be played by a baritone.[2][4]