The Spider-Monkey (or Monkey-Spider) is the secondary antagonist of the Phineas and Ferb episode "Wizard of Odd". He is the pet and right-hand man of Doofenwarlock.
The Spider-Monkey first appeared when Doofenwarlock trapped an arriving Perry with a spider-web (built by the Spider-Monkey himself). As Doofenwarlock sets an army of Flying Squirrels to capture Candace in order to get her red rubber boots, the Spider-Monkey is tasked to watch over Perry.
After Candace is caught, Perry freed himself, prompting an annoyed Doofenwarlock to call in his guards to stop him. Perry manages to escape from Doofenwarlock's castle, prompting an annoyed Spider-Monkey to wave his fist at him in revenge. Perry then brought in Baljeet the Nerd Crow, the Jeremy Tree, and Buford the Lion-Tiger-Bear Guy to help out in rescuing. To that end, they dressed themselves as warlocks to enter Doofenwarlock's castle and free Candace from captivity before escaping, despite the Spider-Monkey's attempt to stop them by closing the gate bridge.
It is unknown what has happened to the Spider-Monkey after Doofenwarlock obtained the red rubber boots before a house dropped on him.
- He is a parody of Nikko, the leader of the Flying Monkeys and the Wicked Witch of the West's second-in-command.