Sibir appears to be a tall muscular man, with striped tatoos on his head, which he has no hair. He also has some sort of piercings on his chin with dark orb like earrings. He also appears to have a robotic arm on his right side, with a type of shirt that only covers the sleeve on the left, exposing his abdomen, he also appears to be wearing some sort of futuristic baggy pants.
Sibir appears to be a ruthless leader, eager to get back what was stolen from him, he doesn't seem to care who he has to hurt or cause massive damage to do it. He also appears to know how to speak bird as he is shown talking to a bird. He is also extremely cruel, as he mocks, tortures both physically and mentally against those weaker than himself, and gets angry when he doesn't get what he wants.