As I don't know the details of Jeff Alt's story, it's hard to say the key elements. But generally, in a person's real story, key elements could be their major life events, like their education, career beginnings, and any turning points in their life.
I'm not sure specifically which Jeff Alt you're referring to. There could be many people named Jeff Alt. Can you give some more context like what he is known for? Maybe he's an athlete, an artist or something else.
Definitely real. Jeff Dahmer's horrific acts and his story have been extensively covered in the news and various true crime accounts. There's a lot of evidence and testimony to confirm it.
Jeff the Killer is purely fictional. It was created and spread through various online platforms and has no basis in real events. People just came up with the creepy tale for entertainment or to scare others.
Definitely real. Jeff Dahmer committed heinous crimes that were well-documented and widely reported. His case is a disturbing part of true crime history.