Leo (Fallout: New Vegas)

Leo is the name of a possibly fictional character mentioned by Lily Bowen. It is, at this time, impossible to say whether or not Leo is imaginary, a product of Lily's Stealth Boy-induced schizophrenia, or if he is someone she actually knew once, possibly from before she was dipped. Leo could also be a shoutout to manhunt 2's leo, where he affects the Daniel Lamb(the main character) the same way lily is affected(Talking to leo, suddenly going berserk)

(There is a small possobility that Leo may be a reference to uncle leo from fallout 3. He is a random encounter character that seem to have little to no memory of his past.)