“Lizard of Badness” comic made by DeviantArtist coffeebandit, who has made a few other humorous mashups of Pixar characters, many of them centered around the Monsters Inc. antagonist.
For example, “what if” Randall was at one point Violet’s monster? One invisibility powered hero meets an invisibility powered villain.
You can view the artist’s full collection here. I definitely recommend.
10%