Episode Title:
It Came from the Nightosphere / The Eyes
Episode Description:
It Came from the Nightosphere: After Marceline (voiced by Olivia Olson) sings a song about the relationship between her and her estranged father, Finn (voiced by Jeremy Shada) releases Marceline's dad (voiced by Martin Olson) from the Nightosphere so that father and daughter can reconnect. However, Finn is forced to stop him from stealing all the souls in Ooo.
The Eyes: Finn and Jake are kept awake by an unsettling horse that does nothing but stare at them with its big eyes. Eventually, after a night of attempting to get the horse to leave them alone, the two discover that it is actually the Ice King (voiced by Tom Kenny) in disguise; he is trying to learn the secret to being happy like Finn and Jake.
