Hm...In the .hack//G.U. series, it was probably Alkaid. Okay, I started to hate her in volume 2 when she went from "I hate you" to "I-I like you, Haseo" with absolutely no character development. They could've made it a more gradual thing and it would've been even more tragic. She was cool, so I have to say hats off for her death [well, comatose and can't be in my party until vol 3]. While I'm still on the G.U. comatose thingy, Atoli going comatose at the end of vol 1 really hurt me. She's so cute, shy, and all-round adorable. Yet she went comatose..the pour soul...she even goes through abuse in the real world [not in our world, in their world] so it's even more depressing that Haseo didn't get a chance to apologize about an argument.