The term "cannon fodder"note a military term for soldiers seen as expendable sometimes gets used in reference to characters who only seemingly exist to be eliminated early, such as Beardo, Staci and Caleb.
Amy and Sammy are sometimes collectively called "the Pahkitwins."
Clone Cody or Evil Alien Clone Cody (EACC for short) for the Cody-duplicate that appeared in The Ex-Files. Has gained Memetic Mutation for his tongue and Seme status, and is shipped with various other members of the cast.
The term "The Sadie Edit" has become a term adopted by fans of reality competition shows in general, referring to contestants who are Out of Focus before suddenly being given the spotlight in the same episode where they are eliminated.
The intern with curly purple hair seen in the 2023 revivalnote reused from a pizza delivery girl design in Total Dramarama, but most fans don't know that got codenamed "Coderra Intern," as since she somewhat resembles both Cody and Sierra, shippers joke that she's their child.
Gwen, Duncan, Heather, Courtney, and Owen are called the "mascot characters" due to them receiving the most screentime.