It's funny how things play out. Through varied circumstances, Static ended up being the only character who had repeated long conversations with Night Cap in early chapters and actually got to know him.
Everything started with Night Cap running away "to get reinforcements." It started the feud with Rhapsody, and blew an opportunity to build some camaraderie with light Fantastic during that fight. And when Night Cap finally got to do something impressive at the end of the mission, Light Fantastic was unconscious. They didn't end up in a small team again until the Barometz encounter.
There was good team building pre and during the heist, but Night Cap's delayed arrival kept him out of any of it. There was an opportunity with Willow Wisp, but then Caboo dropped out. Which... contributed to that late arrival.
Then Night Cap and Static paired up and spent most of the rest of the campaign together.
Maple and Misty will have a chance to get to know Night Cap at the gym, but we're going to see how that went.