Erwin Smith is a blonde-haired, blue-eyes commander of the Survey Corps. He is tall, cunning, clever, intimidating, and suave. Levi Ackerman is a black-haired, grey-eyed captain of the Survey Corps. He is short, blunt, stoic, protective, and cold. Both men have feelings for the same person, yet they won’t admit it to one another, and they often clash heads over it. Erwin is more openly romantic lover, but Levi is a secretly gentle lover.