Party Bears

The Bears make their appearance in My Two Favorite People, where three of them get free Power Rings from Forest Wizard. Along with the wizard, they are scared off when Jake uses his shapeshifting powers to turn big and accidentally knock down trees. Some of them appear in When Wedding Bells Thaw at Ice King's Manlorette party.

In Belly of the Beast, they unknowingly make a new "party cave" inside the stomach of a monster under the leadership of Party Pat without realizing where they were. Though they weren't going to be digested by the monster, they were causing a ruckus with the fireworks they fired from inside that the monster became pained and Finn and Jake were forced to go in and try and break it up. Ultimately after being lead out of the stomach, the bears and the monster make amends under one condition: using lasers for partying instead of fireworks.

Appearance
The Bears are small colored bears with a symbol on their stomach, and they very much resemble Care Bears. Each bear has a different symbol on its stomach. The Bears have a random symbol on their tummies. (e.g. a hamburger, a PHIL FACE, ect)