|“It's way worse than that. He's attacking our food!”|
|— Axl to Macy|
Jestro and the Cloud of Monstrox unleashes the Forbidden Power Ravaging Rot on Knighton, turning everything into green gooey rot. But Robin has an awesome new invention that could help the NEXO KNIGHTS.
- Aaron Fox - Alessandro Juliani
- Ava Prentis - Marÿke Hendrikse
- Axl - Brian Drummond
- Clay Moorington - Giles Panton
- Éclair - Brian Drummond
- Harpies - Erin Mathews
- Herb Herbertson - Brian Drummond
- Jestro - Vincent Tong
- Jorah Tightwad - Brian Drummond
- Lance Richmond - Ian Hanlin
- Macy Halbert - Erin Mathews
- Merlok 2.0 - Brian Drummond
- Monstrox - Mark Oliver
- Roberto Arnoldi - Vincent Tong
- Robin Underwood - Erin Mathews
- Squirebots - Brian Drummond
- Traveler - Mark Oliver
- Nexo Power: Formation of Fortitude (off-screen download)
- Jestro calls Roberto Arnoldi "Mario," referencing the video game character who also speaks with an Italian accent.
- Jestro calls the Rolling Headquarters "Mount Jestromore," referencing Mount Rushmore.
- Ava Prentis references the band Earth, Wind and Fire, and also references the mechanics of the game when explaining to Macy the combinations they tried.
- This episode marks the debut of Castle Muckhouse, the Harpies, and the Rolling Headquarters.
- Axl and Éclair find Clay in the forest after he wanted to get some fresh air in the previous episode.
- Axl briefly references the Lava Monsters.
- When Jestro told the villager to stop his food cart, the Staff of Monstrox had the Forbidden Power of Relentless Rust instead of Ravaging Rot.