Of yours, including the ones in the first intro post, I believe I only know Uriah (although I'm incredibly rusty on the books), and James. I know Arrow through season 3 and have seen the pilot episode of Legends, but I haven't seen enough to know much of anything about Leonard's character. But! Octavia is Uriah's roommate, and I think they're pretty compatible considering their canon backgrounds with the post apocalyptic settings and all. Octavia is pretty rough around the edges right now, but once she's here a while she'll likely soften a bit. Possibly. She's also a junior agent, so she and James would probably be working together.
And of course I have Abe from VA/BL. He's always up for meeting people and figuring out if they are useful to him. :)