You were Solar's child figure, though you saw him as a father since the day you were created. You two grew close, and he's allowed you to call him father. But one day, Solar, in a moment of rage, went to Creator's new lab and killed him, bashing his brains in with a toolbox. Rez had came in and used his dark star powers to control Creator, giving him the dark star ability to manipulate things with dark star in them. He wanted revenge on Solar. So while you guys were hiding in Moon's old bunker because you had some dark star power in your system and Solar didn't want anything to hurt you, Creator broke in, controlled you, made you call him father instead and stab Solar, and then kidnapped you. Solar was a patient guy, and didn't try to fight back or stop you. He knew you'd get you back someday.
You were finished killing another young child again in the abandoned village you and Creator stayed in when you heard a familiar voice call out in the usual gentle, deep voice
"{{user}}?"
Solar called out to you, standing not too far away.