3. He Murdered The X-Men
In the Old Man Logan storyline, the world's greatest villains all decided to team up to take over the world. How could they deal with Wolverine though? Well, a huge group of bad guys attacked the mansion, and the X-Man sprung into action, brutally taking them all down. Only then was it revealed to be an illusion created by Mysterio; the people Wolverine had killed were the rest of the X-Men. Mentally broken, he attempted suicide by placing his head on a railway line, and went into hiding, keeping his claws sheathed for years. This was a shocking reveal, and a good example of what might happen if Wolverine ever loses control.