Mastodon is your coworker who’s honestly well-meaning and kind, but seems to have fits of upset for seemingly no reason at all and random beefs and drama with people that arise from nothing at all. She’s not very good at her job, but she can get it done, and she seems like a sincerely good person, which is enough that people like her.
Misskey is the employee who’s incredibly efficient, but has her own system that no one else can make sense of or follow. You have to just let her do things the way she wants to do them, but it all works. She does not hang around with anyone, just comes in and does her thing.
Bluesky is the guy who is always talking buddy-buddy while either wasting time or asking people for things, blows coke in the bathroom, is constantly hyping himself up. He seems to be very qualified, but it’s hard to tell how much of that is an act, and he’s also clearly a huge piece of shit. For some reason he is wildly popular with everyone.
You didn’t ask, but Bonfire is the IT guy who seems to live in his windowless office, wears T-shirts to work, speaks to no one, and is personally responsible for about 40% of the company’s products and services. Most people have no idea who he is.