a lot of them canonically have jobs, but for some examples:
-Max runs a small TTRPG store, selling fantasy and DND-related stuff
-Federico works as a professional translator and tour guide
-and Momoka is a big-time (pun intended) adult film star

a majority of them play video games, but I'd say either Hunter or Lev would be the biggest gamers out of the cast by far

A majority of my OCs are single, which means that they can be paired up with anyone really, but some have canonically dated others in the past. Here's some examples of characters of mine who are dating:
-Marten and Futo are dating, despite being long-distance partners
-Despite being frenemies, Sagong and Glitch are gay, but they don't show it to each other
-Oyster has canonically dated and had a relationship with a Lucario named Inu
-Futo himself used to be partners with Momoka, at some points even being a co-star for her adult movies

well, some do
-Hunter is a big rap/pop fan
-Elaine's tastes are more based on her period (1930s/40s/50s)
-Marten's favourite canon band is ABBA (much like myself lol)

These aren't all of them, but some examples I can really think of

well currently, it'd have to be a tie between Momoka or Alessandra; both are pretty massive (800+ lbs)

well, I'd prob say Oyster, as despite not being the biggest out of my OCs, he certainly has become MASSIVE in some situations

well, I'd say imo, I'd give them a look depending on whatever period they became a vampire, such as if they died in the 1920s, they'd acquire physical traits common during that time (boyish figure, drop-skirt dresses, ect)

well, I'd say in an alternate universe, she would've cut ties with her family and ran away with Christina to California, leaving their abusive adopted parents behind. Then later on down the line, getting therapy and starting their own families

I'd say prob when I used to be on facebook, I joined a lot of bara furry groups (mainly for the chubby art) and got really into it