Nightcrawler

Nightcrawler was a a monk living in a Swiss abbey, persecuted by his superior and the townspeople who believed him to be a demon. Gambit, Rogue, and Wolverine helped him through his trials. Later, his origin as the son of Mystique was discovered, revealing his foster sister to be Rogue. In the end, after a discussion, Mystique apparently died trying to save both of them from Graydon Creed and the Friends of Humanity