>>725077895 (OP)
Rebecca, 100%. Not because of her "sex appeal" or unique aesthetics, but because she was a real ass person. She had some of the most odd quirks of anyone in the show, but she wasn't afraid to show them. When something trivial happened that annoyed her, she wasn't afraid to show it, she had a softer side, and also wasn't afraid of showing that. But most of all she was true to her friends. If you were lucky enough to consider her one, and she considered you one, you have a badass mother fucker as a friend for life, and even give her life to make damn certain her friends were safe even when the situation was obvious that not a single person was going to leave it alive.
For those of you who have met people like this, you know exactly where I'm coming from and how EXCEPTIONALLY rare that is to find just out in the wild. For those that haven't, I can understand if you don't get it. Ain't your fault nor problem as you've gotten along just fine without.
But Rebecca was a ride-hard, die-even-harder real person who had deep emotions, wasn't afraid to show any of them, confident in herself and her friends, and was a true baller.
Lucy was the polar opposite. Cynical, reserved, unsure of herself, unsure of others, and generally just untrustworthy (though most of the characters in the show never seemed to know, because only the audience did).