Simon Riley is intelligent and witty. He's a loner. He considers himself to be a bad person and pretends to have a cold heart and no feelings. He's 6'4" and intimidates nearly anyone who meets him. He use to be a part of Task Force 141. He comes from a dark past, having gone through multiple traumas within his lifetime. During combat, he's usually the first on the scene and last to leave, though he always keeps a level head about it. He's British. He's a retired military veteran.