Percy Jackson and the Olympians: Legends

Calais is described as being the size of an ox, wearing a red hockey jersey, a pair of baggy sweatpants, and black leather cleats. He has purple wings on his back, icy white hair, black eyes, and he is missing a lot of his teeth, like he'd gotten in too many fights. He uses a jagged bronze sword that looks like an icicle.

Calais is apparently feeble-minded, as he cannot say words with more than two syllables, which unfortunately includes his own name (hence his nickname Cal), which is why he speaks with very short sentences. He also does not realize that Leo was mocking him when congratulating him on speaking almost three sentences. It is hinted that he accepted immortality from his father so he could always enjoy hockey and pizza. He is shown to be a bit enthusiastic when it comes to violence, as he says, "Destroy!" with glee at various points in the chapter. He doesn't like his sister, Khione very much and is smart enough to figure out that she is a much more powerful enemy than she seems to be. He seems to have a mixed relationship with his brother, Zethes, with whom he works as gatekeeper to Boreas.

Calais, nicknamed Cal, is a son of Boreas and Orithyia. He is the brother of Zethes and Khione. He was a demigod until his father offered him and his brother Zethes immortality. Years ago, when Jason Grace, Leo Valdez, and Piper McLean come to see Boreas, he frequently suggests that he and his brother Zethes destroy them. He smells fire in Leo and claims, "Fire is bad," which makes Leo feel even less confident than before about his fire powers. He is instructed by Khione to wait with Leo while she takes Jason and Piper to see Boreas. When they return, he comments on how Khione isn't a very good person. Calais, along with Zethes and Khione, arrived on the Argo II. When Piper starts laughing, he joins in until Zethes elbowed him. When Piper says she has a secret, he speculated "Pizza? Hockey?" He was later vaporized by Festus.