Pharmacology! He's an apothecary by trade!

The science of getting bitches AHAAAAAAAAAAA-just kidding I think he'll study biology because he's got a bit of a farmhand background and likes sustainability

Some of my OCs do!

Several of my OCs are scientists. Shiro from my Persona RPs studied biology for example.

Lin is, by proxy, a person who studies neuroeconomics thanks to her role as the strategist at Rhodes. However, one of her two degrees is specifically in neurology. So there's that.

Blue I don't think would, Interloper would probably start dabbling into some fields of Biology, but he is just going to be looking into all things Terra in a very broad and general sense. He would however be EXTREMELY curious about why the fuck people here have animal ears and tails LMAO

Medicine, Anatomy, and Biology. She's also currently trying to learn Biotechnology :]

Wanted to make Foreigner have studied Psychology but ended up deciding not to when deciding to make them an Operator. Their background wouldn't give a lot of room for it anyways

Pretty sure Bravo wanted to study earth science but never got the chance due to both her military life and other messes

Lazuli is indeed, a doctor, and a pharmacologist. Spends a fair amount in the research department

Agent Thresher, Invests in Cryptozoology, to understand what horrors are near him, and why.
And Agent solenoid understands machine engineering, as expected for the engineering team's specialist.

The rest... lets say they did everything by being the best.

lune would probably do molecular genetics or genome science

Yes! Mostly in the field of biology!