I'm really bad at socializing IRL, and so it leaks into my roleplaying. Ergo, my characters are either oddballs or social outcasts. I have a hard time maintaining a meaningful conversation and so I usually end up in my character's department, idly messing around with mechanics and waiting for people to need me. Which is sorta what I do in real life anyway. Hue.
I'm also partial to playing female characters. My favorites are Janet, Alura, April and Versha. However, because of my aforementioned social awkwardness, I worry that maybe I'm not portraying a woman correctly, and that it might be just coming off as clearly a man in a woman's body.
Also, I have a problem playing old characters. And also security characters. Cristof is supposed to be old and worn down, but whenever I play him, he ends up smacking people with batons and picking fights. People don't like to listen to their superiors, and have these annoying little things called consciences, and so I feel like I have to put everyone back in line. And that's usually around the time I get arrested/beaten to death for overstepping my power.