Thread:Manic The Hedgehog/@comment-30378292-20161124233620/@comment-30378292-20161125000207

Okay, here's a summary:

"Rainforest Schmainforest" felt ambiguous for her first appearance; the girl that was supposedly her in that episode looked nothing like her.

Her first speaking role was supposedly in the movie, but I don't think that's true since the girl that was supposedly her was the same girl I mentioned in "Rainforest Schmainforest".

The official wikia on South Park Studios says that "Rainforest Schmainforest" was her debut, but I'm not sure of that information's reliability since anyone with an account can edit the official wikia (except for the character info boxes).