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Don't know about having to carry a bunch of papers, but that particular transformation from somebody unimportant to somebody very powerful might be covered by From Nobody to Nightmare. I think maybe Beleaguered Assistant might cover the before part of the scenario.
Edited by FurAndStoneI think there might be something here with the papers. The villain of Zootopia is a villain from the start, but they hide it behind a facade of meekness, and they are frequently shown carrying a lot of binders and papers.
Edited by DrNoPuma Please make this canon, DC. I love the idea of the Joker and Harley's hyenas acting like them.

Is there a trope for a geeky character who's carrying around a bunch of papers (of their own inventions and/or research), who drops them awkwardly, being humiliated by the boss? I noticed it happening with Cheetah in the new Wonder Woman movie, and the same thing happened with Electron in Amazing Spider Man 2, and Catwoman...