Eaps headcanons - or maybe au idk anymore it can be both
• Sunshine and Moonlight were originally designed to be performers, much like the majority of Suns+Moons across the multiverse. They both have some leftover codes, programs, and protocols from that initial setup. Sunny uses his more visibly, and the moment Ballora sees him go on-pointe to reach a spot on the playstructures, her brain does a dialup noise.
• speaking of Ballora - Eclipse? Her beastie. Sunshine and Moonlight? Her little siblings. No, this is not negotiable, she is now a big sister, don't be silly, moonpie, there's no escaping her love- (/hj)
• Sunny and Moon sometimes make small games together as a bonding experience - Moon handles the coding and Sun does the visuals and workshops the plot. ((Bonus - Moon is lowkey terrified by how good his other half is at making horror. The games come out GOOD but holy shit man...))
• While his anxiety means he trios and stumbles over his words, Sun's actually incredibly witty, sharp, and has sass for days - he just can't always get it out. So whenever Moon's fronting, there's a 50/50 chance he'll get a running roasting commentary if Sunny's in a mood. It's very difficult to keep his laughter at bay with the more... creative ones.
• Eclipse survives on caffeine, carbs and spite. Unfortunately for him, Ballora and Sunny have spoiled him with coffees and he cannot for the life of him figure out how to replicate it. He refuses to ask, and they never tell. He just sort of... pouts scowls until they come to gift him his blessed beverage
• FC likes Sunshine and Moonlight a lot - they're like.... weird young uncles who might also lowkey be cousins maybe he doesn't really know. Or care. But they're fun!
• Sunny gets Extra Weird around magical/paranormal stuff. Not in an anxious way - or rather, he does, but there's more to it. His systems go a little haywire and his fans kick on, his sensory array gets oddly tingly, and he can feel Something begin to bloom in and around his face and chest. Not knowing makes him panic, and Moon usually takes over once it hits a certain threshold. They've yet to mention it to anyone.
• Puppet scares Sunny, just a bit. Not because of her past or anything, but because she sets his arrays on FIRE in close proximity ((see above)), and they have a tendency to feel... fake? Sometimes?? Almost coddling, but also forcefully so??? It's hard to explain. He likes her well enough, and wants to be friends!! But there's odd undercurrents.
• Moon doesn't like Lefty. Like... at all. He's cordial and civil, but he's not a fan of that bear. The way he bulldozes over others, how he cornered Sunny, the way he treats everyone - it sets Moonlight's teeth on edge.
• Sunny loves sorting things by shape, size, and hexadecimal code. He has absolutely debated the logistics of color coding the ballpit.
• Moon likewise enjoys alphanumerical organization.
• Ballora and Eclipse do spa nights where they watch trashy reality TV, wear comfy pajamas, gossip and occasionally do makeovers. Clip will die before admitting he enjoys it.