User blog comment:Hyperborean/The Heroes of Olympus: The Demigod Diaries/@comment-174.59.196.177-20111230022238/@comment-3146930-20120113220712

Maybe, but he is a Roman monster and the Roman mythology wasnt introduced when at this point in the story (as Jason hasnt arrived at Camp Half-Blood and Percy is still there). Besides that, it is a good idea