|Played by||Dane Boedigheimer|
|Death||Slashed by Megagourd's Power Knife, exploded|
|First Appearance||Sour Rangers|
Marshageddon was Marshmallow's evil cousin and the main antagonist of the episode Sour Rangers. He entered the kitchen and began destroying various puppies with his raygun, including a poodle and a pitbull. This prompted Pink Pumpkin, Yellow Squash, Green Courgette and Red Zucchini to rescue the kitchen from his wrath. However, Marshageddon jumped into his magic microwave, resulting in him growing to a massive size. The Sour Rangers formed Megagourd, which slashed Marshageddon with the Power Knife, causing him to explode.