Airboy fought humans (wartime and postwar), aliens from space and supernatural villains during his career. In the latter category none was more eerie (or odd) than Misery, who debuted in this issue, Air Fighters Comics #12 (1943).
This is the origin story of Misery and his Airtomb. It is credited by the Grand Comics Database to Harry Stein for writing, and Fred Kida for the artwork.
Another story of Misery (and the sexy Valkyrie!) can be found here by clicking the thumbnail.