I'd like to propose a discussion about these two categories; Deuteragonists and Tritagonists.
First off, Category:Deuteragonists is apparently intended for "characters who appear at least twice throughout the series" -- which is not even remotely close to what the word "deuteragonist" means, if it even has a true definition -- So I propose that we rename it to "Secondary Characters", or something similar.
As for Category:Tritagonists, it seems to be for characters who only appear in one episode, but again, "tritagonists" is not really the correct word for that, it has other meanings too so it makes things quite confusing. Therefore, I propose renaming it to "Tertiary Characters", or something similar.
We could also create "Primary Characters" for those who appear more than twice, such as Katz, Le Quack, Shirley, Di Lung, etc.
That way, we would have three solidly defined categories for every character on the show -- "Primary Characters", "Secondary Characters", and "Tertiary Characters" -- and each one would fit unambiguously within one of those three categories.
So what is everyone's opinion on that?