Re: Disads for Dana Scully
I'd consider a Distinctive Feature.
A description of Dana from the "Jose Chung's From Outer Space" episode:
"One of them was disguised as a woman, but wasn't pulling it off. Like, her hair was red, but it was a little too red, y'know?"
And a similar description of Mulder, by the same character:
"And the other one, the tall, lanky one, his face was so blank and expressionless. He didn't even seem human. I think he was a mandroid."