Um, had this poll been open anymore, I would have gone with Larxene. Sure, Zexion is teh uber smex. But I'm a feminist at heart. I seriously thought that the Organization was sexist until I learned of her existence. And, even better, she's not the typical seductress villain in a sexy costume. She wears the same stuff as the boys and fights mean. So, Larxene would get my vote... Sorry Zexy...
You win the intarnetz for that comment. That was hard for me to decide but I went with Demyx. If Repliku had been there, it would have been him, but he's technically not in the Organization. Next would have been Larxene, but I shudder to think of fighting her in KH2. I really wanted to say Zexion but I didn't because I do like Demyx more.
I read somewhere that there have actually been people murdering and claiming that their Kira. Pretty messed up. I can't help but wonder why exactly people are using an anime as an excuse to commit murder.