Just every character of the main crew in general. The SyFy seasons were very Firefly-esque; regular people doing their best to get by and fulfill their own personal goals. Then all of the sudden it's just "OK, we're all space marines on an epic mission to save the galaxy now".

It's kinda how the books went too. Nemesis Games and so on were very much about the personal war between Holden and a certain other person.