Anime avatars are often a coin toss between (potential) comrade and chud, so it may be fun and maybe helpful to think about and share those in the place of that old bellwether for chuddery.
Mine is anyone with ".eth" as a suffix in their online name. I have yet to see a single person that does that that isn't a chud.
It may even be cheating, but seeing an actual cryptofascist cartoon "original NFT do not steal" is a pretty reliable red flag too.
EDIT: Oh yeah, I almost forgot.
anime can also be a kid or someone else who just isn't online in a mature capacity. Like, they're being silly and here's their goofy anime girl. If you really like antiquity online enough that you're presenting with it, you probably are being serious/mature enough to know about the general image marble busts mean, and you can instead use ancient paintings, mosaics, designs, even bronze figures to avoid the connotation.