Hmmm I have been rethinking a lot of things regarding character dynamics as well as their personalities. Rambles up ahead!
Agent 4 Terry. Probably the only person who has no issues whatsoever and will never change. Calm sweetheart himbo type. The only change that will happen is he will likely not be in a relationship with Nate anymore, rather maintain a close friendship. Which means... retcon? Which means he's single again. I think that is the term. Also, he would egg Nate on with his gremlin outbursts (like fanboying over Big Man).
Agent 8b Nate. I also wanted to explore more of Nate's trauma, I feel like I never explored much about the background of him being partly sanitised as well as the things leading up to it. I feel like he would be hostile to an extent at first, and horribly self-loathing, but he starts to warm up eventually. Probably going the Collei route for this (Genshin).
As far as ships go... I still like Terry and Nate, but for the most part the ship felt rushed, so I may revert them back to a close friendship. They will still be roommates, though! Mostly what will change is their status only.
I think it will also allow them to clearly show their differences by focusing on it rather than a romantic relationship they may have. Nate the cute fanboy gremlin who's doing his best to work on trauma, Terry the chill cowboy bestie who deals with everything in a laidback way.
Agent 7 Kane. Kane on the other hand would be much calmer. He will still have an awful temper, but only when truly provoked rather than his default mood. By default, he could be rather mild-mannered and a good friend to turn to for advice. Terry also gives good advice, but Kane seems to have a deeper insight given he is technically the eldest of the group.
Agent 3 Prima. Prima never had much development since I kept her tethered to characteristics and tropes I had imposed on her, so she may end up having a lot of changes. As of now, I have no real direction for her personality yet that I feel would mesh well with the rest of the group. Lots of changes to be done! Time to turn and face the strange!
Agent 8a Vanessa. Vanessa's foundation is pretty okay. Solid, even! However she was not given much chance to bounce off of people to let that shine as I did not have much to go for with Prima (supposedly a duo with her). The best ones she was able to bounce off of were Kane and Nate, but they have their own thing going on separately. She's actually among my favourite personalities, as she is a ninja princess with direct ties to Octavio! And her mum is cool, too.
Neo Agent 3 Ezra and Little Buddy Masu. Since they are the newest OCs, nothing will be changed about them. A subtle change had been implemented anyway, that Ezra was supposedly much more serious and unfeeling. Now it's not that he's serious and intentionally unfeeling, but he is just not familiar with social cues given his past background as an assassin and not going with groups. He is great at communicating with salmonids, though.