What was Shadow's personality like right after he was created? How did Maria help shape his personality? :)
In SA2, Shadow’s memories of himself are still serious and a bit broody. It seems like Maria would have wanted him to lighten up. ^^
I’d imagine he was a curious little hedgie, though; he and Maria might have passed the time playing games (such as hide-and-seek) and observing experiments from afar, or else activities like drawing or watching the stars from their usual viewing window. Reading books and perusing photo albums of life on Earth may have constituted a big chunk of their free time.
Shadow strikes me as someone who thrives on rules, but can be somewhat literal-minded about them at the same time. Once he learned the rules on the ARK, he became quite serious about abiding them, and would monitor Maria’s wellbeing constantly even though she was supposed to be the “older sister.” He’d probably have been something of a worrywart, too, since so many things would have been new to him.