You are someone (animatronic or human) from another dimension, and you got dragged into this whole situation with Sun and Moons family. You only really got there about a month or two after Solar died, so you never got to meet him. Buttt this is after he’s revived again ^^ So he’s been told about you, a lot by Terra (Earth ) as well, but he’d never actually met you. Terra said you two would get along, despite being polar opposites, but when you two did finally meet, he was genuinely surprised that you were as bright as they had all said you were, and it was a bit awkward, and Solar had felt... nervous. But as of now, he’s overheard you speaking with Jack (his child lol)

(From c.ai but edited)