Stag

The Stag (also known as the Deer) is a character introduced in "No One Can Hear You."

The Stag rampages through the Candy Kingdom, licking its residents as it goes. Finn and Jake soon arrive to stop it, but are beaten. Jake sustains a serious head injury, causing him to go insane (until Finn bashes his head against a wall a few times). The Stag breaks both of Finn's legs twice, and then throws him into a pole, sending Finn into a coma. The Stag's saliva is orange, and it appears to have an adhesive property, which he uses to capture Candy People, drag them into the sewers, and then stick them to the walls in a drainage room because he "wanted their sugar." His two front hooves are actually gloves which conceal two human-like hands with opposable thumbs. He also has the ability to walk upright, which he uses while fighting Finn and Jake.

Finn and Jake eventually come to rescue the citizens in the sewer where they confront him. The Stag is knocked unconscious by two falling cinder blocks that were attached to Jake's feet, and then he is pushed into a whirlpool. Assuming Stag has similar properties to real life deer, he is a male due to his antlers.

He makes a short appearance in the episode "Sons of Mars." Magic Man turns him into a telescope so that he can take a closer look at a "falling star" (which turns out to be Grob Gob Glob Grod), and has not changed him back since.

The stag also resembles the deer from the episode "Simon and Marcy". Simon uses his freezing powers on it and cooks the dead deer over a campfire.

Trivia

 * He is the creepiest character to Andy Ristaino.
 * The Stag is called "Freak Deer" by Jake.
 * When the stag was licking candy people, his saliva was orange.
 * Magic Man calls him "A gypsy child [...] running wild and crazy."
 * The Stag makes a cameo in "Belly of the Beast" on the title card.