Sun, in his current “Eclipse needs to die yesterday” state, being introduced to the various Eclipse’s Lunar and/or Moon adopt for the the first time? Before today’s bs, of course, because I doubt Lunar would let Sun near any Eclipses after that.
Not all at once or in the same timeline, just how you think a first meeting with each one would go if Sun had no previous exposure to any nice Eclipses?
Sun would probably be very upset meeting Good Eclipse but eventually he’d come the realization Lunar did that ‘oh, he’s just a mechanic’.
If he met Kill Lunar Eclipse, he’d be quite startled to meet a blind Eclipse whose just as snarky and sarcastic but no longer evil. But meeting him may just give him light on his Eclipse’s mindset because KL Eclipse more freely talks about his feelings with his brothers and would do the same with Sun if he asked.
Dadclipse, being the closest Eclipse to Sun’s own, would just stare at Sun and explain every single bit of his own, and therefore canon Eclipse’s, reasonings for the things they did.
Meeting either memory loss Eclipse or factory reset Eclipse would show Sun the scenarios where Eclipse lost his memory and the ramifications it left on them, ML Eclipse being essentially a feral stray only knowing how to survive on the streets and FR Eclipse being a blank slate with trauma but no memories to attach to the various traumas. He’d be very protective of these two, regardless of which one he met, it would greatly change his mindset with Eclipse in general.
Human Eclipse would be a horrific meeting for both parties. Human Eclipse is terrified of everyone, because, in his eyes, everyone is a threat and he could be hurt by anyone. Sun would be more scared of all the bruises and cuts and wounds on human Eclipse because he knows humans are fragile and he would have to calm him down and comfort him before being able to talk to him.
With stress response Eclipse, Sun would be very skeptical because he’s very quiet and he doesn’t speak much because he’s scared of being stressed to breaking again. But once they begin talking, Sun feels very differently about Eclipses knowing his own could break under pressure just like SR Eclipse and would likely feel quite protective of his own Eclipse, despite their past.