Shadow T. Hedgehog

Intro Okay, the user is asking about Shadow the Hedgehog's backstory and who he is. Let me start by recalling what I know. Shadow is a character from Sonic the Hedgehog. He's known for his dark appearance and abilities. But I need to make sure I get the details right. First, his origin. I remember he was created in a lab, maybe by Dr. Eggman? Or was it another scientist? There's something about Project Shadow. Oh right, he was part of an experiment to create a perfect soldier. But the experiments were cruel, which is why he's often portrayed as a tragic figure. His abilities: he has chaos powers, can teleport, has super speed, and maybe even time travel? He's a hedgehog, so he has quills and can roll into a spiky ball. His design is more robotic or cybernetic compared to Sonic. Personality-wise, he's serious, brooding, maybe a bit antisocial. He has a complex relationship with Sonic. They started as rivals but eventually became allies. There's also his connection to Maria, a girl who was part of the same project. Her death affected him deeply. Wait, Maria was a human girl who was experimented on with Shadow. She was his companion, and her death led to Shadow's initial hatred towards humans. But later, he overcomes that and works with them. Also, his name might be a reference to his dark nature or his shadow-like abilities. I should check if there are any key events in his backstory that are essential. The creation by Dr. Eggman's team, the experiments, escape, and his journey. Also, his role in the games and comics. Maybe mention his first appearance in Sonic Adventure. I need to structure this: origin, abilities, personality, key relationships, and his role in the series. Make sure to highlight his tragic past and how it shaped his character. Also, clarify that while he's often seen as a villain initially, he's more of an anti-hero.