Four Brothers

Mistoffelees, Munkustrap, Macavity, and the Rum Tum Tugger.

i always thought Misto had more to his story than just magic, and if you watch his interactions with Munk and Tugger, it does seem like they're putting up with a hyper little brother most of the time.
And no, tugger has not gone over to the dark side. He just didn't care who he was standing next to as long as i got his good side