The Ex-X-Men are a group of rogue mutants who were kicked out of the X-Men for various reasons. They included:

Mastur-Man: Little Bobby Jenkins thought he was a normal kid until his stepfather walked into the room on his 15th birthday. Suddenly, Bobby knew exactly when his stepfather last masturbated. With these powers, "Mastur-Man" has embarrassed people all over the globe. Unfortunately, Professor X is not completely paralyzed from the waist down, and he could not afford the constant blackmailing.

Kyle: Kyle has the power to control Magneto's mind, even through his helmet, and he can destroy any organic lifeform simply by looking at it. He was kicked out of the X-Men for having the worst name ever.

Harry Goldberg, D.D.S.: Harry Goldberg got into the X-Men on a favor for taking Wolverine's wisdom teeth out. He's just a dentist. He was then kicked out when he stopped taking the X-Men’s insurance.

Quanto: Original identity unknown. Has the mutant ability to give and understand lectures on quantum mechanics. Kicked out when Storm started practicing Scientology.

Soapy McSoaperson: One day in Ireland, Bobby McBobbyson was taking a shower after a long day of harvesting the potato fields. He realized that he was getting clean and his hair was turning blonde without even using soap. Bobby thought that this was because he was a mutant with the ability to shoot soap from his fingers, but it turns out there's just a lot of hydrogen peroxide in Ireland's water. Kicked out for not having any powers.

Brain-Man: Brain-Man is a mutant who is made entirely of brains. Unfortunately, this does not make him smart; it makes him incredibly slimy. Also, he's mentally retarded.