Joseph Tortured

Back in the late '90s, Magneto had a clone who sort of joined the X-Men. Physically he was a young Magneto with long hair, but mentally he had no idea who he was. Here's a scan of him from Uncanny X-Men #350. He was brought into Gambit's trial after being interrogated by some minions of Eric the Red (who was really Magneto in disguise).

Edited on 2/25/18 to replace image with better quality scans.