Art not mine I heard that solar might be getting a villain ark so here are my ideas of what could have triggered it Solar never properly got to mourn nexus. He was just immediately told his best friend was evil and had to accept it. I think solar has taught himself not to get his hopes up when it comes to saving people because of how his Moon acted. Solar doesn't want to be like his Moon. Solar has so much built up trauma, not just from dying but also from the years of @b^$e he was forced to go through, losing his best friend, having his son ripped away from him and turned against him and having someone actively trying to k!!! him. Solar never lets it all out.... Anyone can be a monster if they're pushed hard enough. Solar is an Eclipse. Even though he's got a good heart it won't take to much to break him. I'm hoping it has something to do with nexus. Maybe he finds a way to save him but the idea is turned down, specifically by Moon. Or even something traumatic that pushes him over the edge.