Okay, I know I just came here, but I'm going to say
GeoGonzo for the best Disco Elysium avatar and
Xavi just because her Eldegard (sp?) avatar is so far consistent; by this point, it's what defines the, or at least represents them (sorry if I misgendered, I truly am).
Ballerman has a nice avatar as well.
B. Spaceman for reasons I'm not sure about, maybe the cigarette sells it.
Komo and their avatar goes well with the colors.
Moon is kinda "iconic" in a sense, given how much I've seen it used.
ExMachina has the only "cat person" avatar that I liked, though bias probably stems from me liking Dishonored (though I had problems with the second one's story).
Slaythe because they got Android 17 in their avatar and I always liked Android 17.
Mine is pretty tame. Like, it's the most known picture of Grogu and Grogu is a pretty overrated character (yes, I went there) but I decided to take it before anyone else did (assuming that I'm the only one).