From anime, movies, books, etc etc. Doesn't matter what media this individual is in, just who it is and why.
For me it's Haruhi Fujioka from Ouran High School Host Club. She's a girl, but she doesn't stereotype herself as female. More likely than not she's both agendered (without gender) and asexual (without sexual interests). And sure, she has romantic interests in Tamaki after she got to know him, but she was attracted to him on physical traits alone.
I don't know, I just really admire how her character is (in all its quirky goodness) and how wise she is despite her youth.