Here he is!! And oooh i wanna rant a bit. For this Au, Eclipse would be moostly similar, though he'd be closer with Sun than moon. that's where the change is.
After the virus, when they were cured and the place was getting fixed, Eclipse would bond with Sun like brothers would. And eventually, Sun would become protective of eclipse, he'd take over if there were fussy parents that needed handling, He'd make sure his brother doesn't get overwhelmed and takes breaks, reminding him to recharge..
Meanwhile, with Moon, he'd be ridged and an overall prick. After the Virus incident, He'd either isolate himself or snap at any attempt of a conversation, He'd act so cold to eclipse and hate him for being created..though, He would attempt to talk with Sun...Sun would shut it down due to moon not being able to own up to the stuff he did..
Eclipse would be a safe space for him, Sun was absolutely Terrified of Moon..Sun was the most awake, the most Lucid, during that time and he fought against the virus hard...He saw how it affected moon, making him violent, As Vanny used him as a puppet..He was scared moon would still be violent and horrid after it..He thought moon would blame him for getting eclipse made.
He did say to Cassie in the game "Reboot! Reboot!!! We need to be whole!" after all.
When Neptune meets them, he'd get involved so he can convince Sun that Eclipse is stronger than he looks, and that he won't always need protection like that..But the main bit would be, He'd call moon out on his behaviour, because he acted the same way once.
He'd be the one to get moon to talk with Eclipse more, and in a way, Help with getting sun and moon to communicate.
Though, that's all i have rattling around right now :3 enjoy a lil drawing of Neptune and Eclipse going over files 🤣