While I'm straight, so it really isn't a crush, I'm gonna have to go with Aldrea. I don't know, she was just such a Bada**, I'd be besties with her in a heartbeat.
It was kind of funny, I fell in love with HBC when I first read it and thought it was like, eclipsed only by Elfangor/Loren in the list of ultimate romances.
Then I re-read it recently and I was like "Um...wow...she was kind of a b*tch. Manipulative, conniving, brutal, nasty, and pretentious to the nth degree. And Dak straight up knew it too. Why did Dak like her again?"
Even so, she was a girl that knew what she wanted and got that sh*t done. I mean, I think if you ranked characters based on pure BA, Aldrea would be number one or two (though I can't even think who number one would be, because she didn't have the villian decay that the Visser went through.)
She was part of the reason Estrid was such a huge disappointment, I mean, she turned out to be a total wimp. Ax deserved a girl like Aldrea. (IMO)
Man, the Animorphs should have let her just possess Cassie. Hmmms....*random plot bunnies spring into view*