Ricardio the Heart Guy
S01E07 - Airdate: 2010-04-26
Runtime: 15 min
Finn believes that Princess Bubblegum's new friend, a literal heart named Ricardio is evil and is proven right after learning that Ricardio is the heart of the Ice King. Ricardio reveals that he wants to "make out" with Bubblegum's heart, but he is defeated by Finn and Jake.
Episode details and rating from TVmaze.