My recent submission made me realize just how *old* I am when it comes to DeviantArt. Because I remember quite a bit of things, mostly the stuff that was popular at one point or another (I didn't care about site politics, tbh). You thought you couldn't step for 2-3 feet without bumping into Homestuck or My Little Pony these days? Man, back in the day... *shakes cane*
I remember when you couldn't go three feet without running into one of the following at random points in time:
Nightcrawler from the X-Men (because of X2; this was WAY early in the site's history fwiw)
Teen Titans (this was mega popular back in the day, hoo boy)
Homestar Runner (it was the Homestuck of its day, believe it or not)
Final Fantasy 7: Advent Children
Kingdom Hearts (though tbh, I don't think it ever truly went away like the above)
I'm trying to remember more, but those are the ones that stood out to me. What say you?