Strangers tend to be nervous when approaching me as I'm a big guy and usually pretty serious when out and about. For some reason my serious face gets seen as a cranky/angry face xD
I'm not very talkative either, so the odd person that does try to go for a chat gets short answers and usually feels awkward and doesn't try again. I'm not comfortable around strangers so my answers will be short. I dislike talking, so my answers will be short. If I'm working, I'm in a hurry, so my answers will be short xD
As for online, idk. I don't think I'm scary or anything, but wouldn't be the first time I misjudge how I come across.