Visually, I have a terrible tendency towards tall, scrawny men because I just like that look, and unless I actively avoid it, there will be at least one in every story. I tend slightly towards guys for probably the same reason most people do -- we all grew up on stories where girls were side characters -- but I'm startin' to branch out!
It would be harder for me to pin down a consistent theme in my characters' personalities, though I don't doubt there are some! I'll need to get a class of highschoolers to write some five paragraph essays about themes that emerge in my work or something.
I'm also very very fond of characters who are hyper-competent in exactly one arena and struggle in others. The overpowered wizard who's too wimpy to lift all his books, the brilliant mechanic with crippling social anxiety, the illusionist who would be a master of disguise if his speech impediment didn't give him away, etc etc. They've all got both a great talent and a terribly hindering flaw.
SLIGHT TANGENT:
Bland Main Character Syndrome is something that every storyteller friend I have has struggled with at some point, myself included, and I'm actually really curious what causes this. There was a Cracked dot com short that described the phenomenon in movies as being an easy way to get audiences to invest -- you have kind of a boring, generic hero who gets dragged into an adventure by people more interesting than he is, and that hero becomes the audience's avatar.
I'm actually really curious if it's as common as it seems to be, if it's necessarily a problem, if this is a natural thing, or if it's something we picked up recently from having movies as such a big part of our storytelling experience.
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