The lich just got into another dimension that doesn't mean that he won't come back one day and fight Finn or may
Be kill him... I know Finn is a radical hero but he can't stop every thin because he's not immortal.because if the screeching owl came in the box and played games in the hot tub then their must be someway for him to get out and the lich could just follow him and Get out and make up a plan to destroy the land of ooo. But Hansen abadere could join up with marcaline Finn and jake and fight him.