Orion and Atlas: -They're from an Au where their Sun and Moon swapped bodies permanently. Parent: Was and Still is Moon, they're one of the few exceptions because their Sun and Moon swapped. Extra: Atlas and Orion are actually also swapped, Atlas was originally in a moon model and Orion in a Sun model, they swapped and when they got here their bodies were modified to their likings, though they didn't change back to their original bodies they just had modifiers like Atlas with stars and Orion with suns. Atlas: He is kind, enthusiastic and oftenly bonds with other kids easily, his trauma is that Sun(or in their dimension Moon) used to physically abuse him so he's often anxious around new Suns and if he was bullied he'd just get anxious and scared because Suns are still a hard point for him. He's close with his brother Orion but since their in different grades they don't see each other much. Orion: Orion is calmer but can get very energetic, he's friends with Dazzle and he's nice however..He's oftenly bullied making him oftenly the loner as he "doesn't want troubles with another Sun" He was emotionally abused by his Sun(which is Moon) and sometimes purposfully scared (Sun*Moon* would corner him and stuff) but Atlas would never let Orion be physically abused nor Moon*Sun*, Their Moon*Sun* did try to protect them but was oftenly over powered. How they got away: Sooo Killer Sun stumbled upon this and after finding out the Sun was Moon he negotiated with Moon*Sun* and eventually killed the Sun*Moon* and Dark Sun later discovered them found out that Moon is Sun and accepted them including the kids since they were Moons*Suns* kids.
(Orion I made a while ago so he's in my old art style, Atlas was unfinished so I just re-did him other then for the head TuT) I've made 1 in the past: Dawn (Go check her out sometime ^^)