I just joined the site and i know this may be an odd first topic, but it seems like the best icebreaker and introduction.
My answer really depends on if im talking generally or if im just talking about anime. My anime waifu is Haruko from FLCL. I have my reasons, hard to explain.
Or Vi from League Of Legends, but i feel like if i didn't give another from... ya know... an ANIME, people would make fun of me.