I think of the admins as like if you've ever watched Octonauts, when Barnacle sounds the Octo Alert, the screen divides into quarters and there's an Octonaut doing something in each quarter and then they stop doing something and turn around and all leave their quarters to go save the day? Sorta like that, but split the screen into thirds, and each figure is a bit indistinct but you can still tell the general gist of what they're doing. The admin on the left side of the screen is at basically my mom's "desk" but it's very clearly wooden and is bent over what looks like my mom's laptop; the admin in the middle is sitting on basically our couch, with their feet propped up on the cushion, and is working on an ipad; and the admin on the right is... well, I actually have no idea what the admin on the right is doing. Maybe they're at Admin HQ XD. But also, all the admins are dressed in comfy pajamas and have mugs of steaming coffee/tea next to them :D

Hmm I would probably say what a typical office person would look like, with a computer and a cup of coffee or tea, who probably also has a book on their desk that they're reading on the side.

The adult organizers of one of the clubs I’m in have shirts that say "Omnipotent, Omnipresent, Omniscient" with an Illuminati symbol. I like to imagine all the admins have that shirt. 

I think of one admin who's sitting on a couch where they live and on a computer, wearing normal clothes. Like for some reason I don't think of all of them together. I feel like they're each posting comments from wherever they are.

Ring-wraiths from Lord of the Rings.