The Mutant Army of Dr. Hibbert

 a limited-time questline that was released on October 24, 2021. It the main questline for Act 3 of the Treehouse of Horror XXXII Event, progressing through it  all the Act's personal prizes. It preceded by the main Act 2 questline, This Means Dino War. It succeeded by the main Act 4 questline, Better Fighting Through Science.

Quests
^If the player does not have Mad Dr. Hibbert, Dr. Hibbert will be used for the task.

*Only appears if the player has Mad Dr. Hibbert.

**Only appears if the player has Dr. Hibbert.

***Only appears if the player has Panther Marge.

****Only appears if the player has Grampa.

*****Only appears if the player has Grampasaurus.