For Crux: He's friends or at least acquaintances with several different OCs! From the beginning when he woke up, Crux was lucky enough to have Doctor Sunless (later to be Doctor Sunrise) there to help guide him and get him adjusted to the world he was living in now. Crux is also good friends with Doctor Halcyon and Doctor Jasper! Crux isn't exactly besties with Doctor Seeker, but he respects the man and knows that he does a lot of good work around Rhodes Island, as well as Cetus, the newest of the Abyssal Hunters on board. Crux doesn't have the full picture of what's going on between the Hunters and the Seaborn, but he knows enough, and feels like Deepcolor should have the chance to live on the land with Cetus, and wants the two of them to be happy!

For Valerian there's a whole slew of friend's fankid OCs that are friends with him, but I'll just go over some of the most important relationships for him.

Mercy: Valerian and Mercy practically grew up together, both of them were onboard the landship basically all the time, and they've become the best of friends over the years! Valerian is concerned about Mercy's health a lot of the time as they get older, but he knows that she won't stop living her life, and he'll do whatever he can to support her in that.

Marble: Similar to Mercy, Marble has been a close friend to Valerian for decades, though I imagine the two of them have had their fair share of (friendly) squabbles over silly stuff. Valerian always loves hearing about Marble's expeditions, the wonderous sights he gets to see on such a regular basis, it's all nothing short of incredible to him.

Tourniquet: Valerian realistically didn't expect much when the Vampire showed up at the door to his office in the medbay one day, so thinking back on that moment gets a bit of a laugh out of the Feline now, given how much has happened between the two of them, and just how much he loves her. Tourn isn't necessarily around 24/7, but he knows that any time she's on Rhodes, he can find her (or she'll find him) and they can spend it together, making good memories with each other. Valerian will always try his best to give Tourniquet those happy memories to look back on, so she'll never forget the time they spend together, and can smile fondly at the thought.

Cian: Isa is like Valerian's little brother, no matter what timeline they're in! There's nothing Valerian wants for Isa more than to have fun and know that people care about him. Seeing how serious Isa takes things, or how he'll skirt off to the side of the group at events, Val wants to be there for his little bro from another mo', making sure he walks away from any hangout smiling and happy.