Rex

Rex (full title: Rex Miperdeen), is Mip and Lisa's older brother and an  antagonist in the earlier issues, sometimes a minor protagonist and mostly a bully to Mip throughout the series. He  is a high school junior. He is mainly shown in  Mip Comics and Mip's Treehouse of Horror. He is the lazy, mean and annoying child of Mr and Mrs Miperdeen, and the brother of Rex, Miper, and Lisa.

Personality
Rex, it is explained that he is only good at a few things, namely music, and spends most of his time on it, which deters him away from schoolwork. He is also very skilled at skateboarding. He would much rather sleep over doing anything else. Fitting with his love for music, Rex is the lead drummer of a group called Under-Flare, a band.

Rex is extremely lazy when it comes to school, which explains where Mip gets some of his laziness from. Mip believes Rex is lazy and unintelligent in all other areas, though there are clues that show otherwise. Rex clearly isn't the smartest of his family, since he hardly makes an effort at school and constantly asks his parents to do his work for him. Although Rex is portrayed in this manner, he is actually quite intelligent in manipulating other people.

Skills and Abilities
Rex has a particular skill in drumming and is skilled at skateboarding.

Appearance
Rex's face is very similar to Mip's but he has wavy black hair and is taller.