I don't really know if Jeff would win. I'm in doubt because Jeff is an awesome creepypasta, and Finn is the hero of Ooo. Jeff is really very strong but Finn with Jake is very strong too. Jeff could face Slenderman (alone) and get out alive, Finn and Jake could face the Litch (I don't know if I said his name right) and a bunch of other monsters. I love the both. If anyone could help me I'd love it.