X-Men: Evolution (2000)

S02E10 Mindbender

Jean Grey becomes the host for a telepathic mutant who manipulates her abilities to take control of her fellow students. Under this influence, the students are coerced into assisting him with his sinister plan to free Apocalypse, an ancient mutant intent on subjugating humanity. The stakes rise as the X-Men must confront not only the threat of Apocalypse's return but also the battle for Jean's mind and will.