Raika is a young, tall, and robustly built Steller's sea eagle in his early 20s. He has dense dark brown plumage that fades into black in the area of his face. This strongly contrasts with the white color that covers the upper and medium areas of his wings, as well as his whole tail. His beak and claws are yellow.

He wears a dark-colored hooded jacket over a white T-shirt, black sweatpants, and light sneakers. He is also seen wearing flannel and pants, white socks, in addition to wearing goggle