>>98758502They were all expressions for Rex, as well as something for Rex to play off of. Bobo was Rex's party animal side, his, as it were, baser animal instincts. His desire for self-gratification with zero responsibilities, especially for his own actions. He's also a foil in that while Rex may appreciate Bobo's lack of responsibility, at least when it isn't about something done to Rex personally, Rex still feels driven to account for what he's done, and struggles with guilt.
Six was Rex's desire to be a badass hero and look good doing it. Cool, calm, collected, and effective. But at the same time Rex's foil in that Six is too damn withdrawn to the point of being socially inept. Still gets the girl, though, and one Rex desires.
Even Doc Holiday could be said to represent Rex's largely untapped intelligence, especially once we learn his brother and parents were all geniuses. She's even driven by wanting to help her family, something very key to Rex's character be it the family he doesn't remember or the new one he's formed. Then there's the lover interest angle, apparently settled when they finally cured Doc's sister though the sister, to my knowledge, was never seen again.
Noah, though. Now there's a largely useless piece of shit they had to struggle to justify. At least they got some story antics out of him, like the prom episode. Or the haunted building.
