The Onceler is the antagonist from The Lorax by Dr Seuss. "Darkiplier" is an in joke from Youtuber/Streamer Markiplier's fans, to describe when he is acting up. Bill Cipher is a cartoon character from Gravity Falls, the antagonist from a 2-dimensional universe who looks like the pyramid on the US dollar bill.

The original poster dressed in a silly outfit and asked for feedback- presumably knowing it was ridiculous

and then (pretends to have) got mad at being compared to the character and others, joking that he'd rather be called a slur than suffer these comparisons.

The post ends with a pun on "one slur" / "onceler" which are homophonic

[–] TheFriar@lemm.ee 5 points 4 months ago (1 children)

Jesus. I mean, thank you for that explanation, but I also feel even more in the dark because I’m not even familiar with most of them. Except the Lorax. But I definitely don’t remember the book well enough from my childhood to remember the villain.

[–] TotallynotJessica@lemmy.world 5 points 4 months ago

It's the movie version who's an edgy twink that Tumblr got obsessed with. The book version is just green arms and hands who never shows his face.