Rider is a servant in FSN. Her real name is Medusa and she is one of the only servants that isn't exactly considered a "hero". Medusa, if you've read the myths, is not a nice character, in fact she's like a villian. Even though her past is a sad one, she's still not really a "hero". Anyway, her master is Shinji in the anime but in the game, you'll find out that her real master is Sakura. She is very serious, even though she doesn't look like a serious character because of the way she dresses, if you guessed that then you're wrong. She's very mysterious. I like her a lot.

I don't think I can match her up with anyone. Rider isn't exactly a character good for romance. She's a very loyal servant though! ^^

Why Rider?

I like Rider because of her past and her identity. I was never a fan of Medusa but after watching the anime, I realized Medusa couldn't possibly be that bad. People all have their reason to become who they are in the end so Medusa isn't any different. I also like the fact that Rider is loyal and intelligent too. Seriously, at first glance, you might think she's a slut because of the way she dresses, but then guess again.

The Anime:

The anime originated from the game, Fate/stay night. It's about a boy named Emiya Shirou becoming Saber's, his servant, master. There are seven masters with servants in the war. Basically, the master's goal is to get the Holy Grail and have his wish granted. It's an awesome anime, you just have to watch it to understand it. If you still don't understand it that much, check out the game. =D