I decided to glance at the concert and, as I figured, Big Man is so obnoxiously stiff. I guess they really didn't want to bother with giving him any sort of proper interaction. Instead, he was just waving around and slowly turning in place like someone's grandmother at a family get-together. They could've had him dive into the floor and pop out from one end then the other, yeah? It wasn't as bad with the other two (other four) but they spent much of their time staying in these invisible "lanes" that it only looks like they are together. I get the feeling that if we saw a top-down version of this, we'd notice these thin, almost invisible barriers separating all of them to prevent collisions with one another.
Your piece reminds me of a place in WoW's Un'Goro Crater what with all the colorful crystals lighting up a cave near a neutral campsite. I remember screenshotting that cave (this was well over a decade ago) and using it as a background image on my PC. If I had any sort of personal connection to the Splatoon series, I probably would have taken this art and done the same with it... *shifting eyes* with your permission, of course (probably).