- Dr. Kane Corso
- "The Wolfman” A.I. Radio DJ
- Diamond Dogs
- Halloween Jack
- Captain Scrap
- Nagel (Glampire's robot servant)
Characters mentioned in the brainstorming process or by Nerdy Show hosts elsewhere, but not confirmed as "cannon".
- Plant-based "anti-hero" (AKA failed Captain Planet)
- Queen Lich
- Fido Farnsworth
- "The General" (AKA General Wetworks)
- The Terror Terriers (member of the Diamond Dogs?)
- Ninja and Samurai Cats (from "fuedal" Japan)
- "Bad Masters" from a forgotten human colony
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