User blog comment:CheeseBurgerGuy/Total Drama My Universe: The First Generation Cast Reveal/@comment-32999728-20191128032754/@comment-35606925-20191128034515

Kind of.

It's more like this:

18 Original Conestants

3-5 introduced in the following seasons of the trilogy

18 Orginal Constests (plus two more for the next season)

Mixed cast from first and second generation

10 New Contestants (plus some old)

From here on, with the exception of maybe on or two late-comers, its recycling the cast.