That lifeform, crucially, also needed to resemble existing characters from their universe.
DNA Stranded
ForMewtwo, the basis was Mew.
ForShadow, the basis was not, actually, Sonic at least not in universe.
Mewtwos genetic material came from the legendary Pokemon Mew.
Unlike Mewtwo, though, Shadow is motivated by lies.
After the death of Maria, the human girl he was raised with, Shadow aimed to protect humanity.
That sets him on a collision course with our heroic hog.
The Redemption Of Shadow And Mewtwo
But both Mewtwo and Shadow come around in the end.
That moment sounds goofy, and it kinda is, but it still gets me to this day.
In recent games, hes just another friend and member of Sonics crew.
At least, not concretely.
Shadow and Mewtwo were bad, but they weren’t that bad.
And Shadow and Mewtwo have used the gift of life to be extremely cool.