Gary the Mermaid Queen

Gary (full title: Gary the Mermaid Queen ) appears in "The Witch's Garden." She is a skeleton that resembles a ghost or harpy more than a traditional mermaid -- probably justified by the fact that she lives in the River of Junk. Nontraditional in appearance, she customarily tries to mate with the males that she finds. Her bony hands are somehow connected to her hair, which she can easily move in a circle around her body. Gary is first seen when Finn, while looking for objects to make a catapult, takes a trash can lid off her eye. She is later seen outside and asks, "Which one of you mortals wants to mate with all this?" According to Finn, she is "the grossest thing ever," which causes Gary to get mad and attempt to feed him to her supposed Hatchlings. Jake soon gets his powers back and saves Finn by sending Gary back into the river.

Appearance
Gary seems to be a floating mermaid made of bone. Her hands are connected to her hair. She has gigantic eyes and hair that resembles Marceline's, and a long, slithery tongue and she is described as ugly by Finn.

Abilities
Gary can float and create blue flames from her hands.

Quotes
"Behold, the beautiful mermaid of the river! Which one of you mortals wants to mate with all this?"

"Remember to save the brain for dessert!"

Trivia

 * Gary's hatchlings do not resemble her, instead they look like baby birds or chicks.
 * Gary does not really resemble a mermaid.
 * This is further disputed as she has legs instead of fins.