>>11239201Dunno if there was an arc where that did happen, but if we're talking of the most obsessed villain I know that really went all the way to pretend, its got to be Black Manta, Aquaman's arch enemy.
Lets just say he literally went all the way in "pretending" he had autism, I believe he did stuff like get doctor's certificates proving it, forging his medical history, all to make Aquaman look bad and feel guilty for fighting him. Aquaman also ended up trying to make up for it by curing his autism. Yes this page is real, not edited.