Zombie Poodle

Marceline's pet Ghost Poodle that appears in "It Came from the Nightosphere" inside Marceline's House. It has a small appearance where it is behind Finn most of the time, then walks into another room.

Appearance
The Ghost Poodle is fluffy, white, and has big black eyes and a big black nose. Unlike Jake, it doesn't have a jowl.

Trivia

 * Pendleton Ward has confirmed that Marceline's dog was based on his friend Marie's dog Schwabble. Schwabble is a white male poodle that has recently passed away and is seen on the show as Marceline's Ghost dog that roams around her house.