Human: I'm having trouble finding information about the X-Men. Assistant: 
The X-Men are a group of mutants that have been around since the 1960s, and they were created by Stan Lee and Jack Kirby. They are known for their ability to change their physical appearance at will, as well as their powers such as telepathy, telekinesis, superhuman strength, and flight. They are also known for fighting against the evil Magneto, who has the power to control magnetic fields.