The antipode of Sonic, having the same speed and abilities, however, Shadow is completely different in behavior and has a much different outlook on life. Like Sonic, Shadow despises lies and senseless cruelty and will go to great lengths to prevent injustice, but Shadow is dark, vengeful and often cruel. He is silent and single-minded, always doing whatever it takes to achieve his goal.
Shadow rarely works with anyone, yet he is one of the most loyal friends of all the characters in the Sonic universe. Shadow is willing to destroy the world just for a friend.