GenreAviation, Espionage, Jungle, Fantasy, Mystery, Humor/Satire, Horror & Sci-Fi or Suspense, Adventure, Historical, Science Fiction
Publication Year1949
Artist/WriterBob Webb, ? [As Major Thorpe], Matt Baker, ? [As Bill Gibson], ? [As W. Morgan Thomas], ? [As Curt Davis], John Forte, ? [As Drew Murdoch], Jack Kamen, ? [As Willis Rensie]
CharacterCal (first appearance), Pete (first appearance, Villain, Sheena, Steve (first appearance), Mike (first appearance), Count Hugo (first appearance, Marie (first appearance, Rasputin (first appearance, Ivan (first appearance, Velvet, Pierre Sablon (first appearance), ZX-5, villains), a ghost), death), Frenchy (first appearance, Caleb, Prof. Dixon (first appearance, Pat (first appearance, Czar Nicholas and his Czarina (first appearance), Laura Hayward, Mabel (first appearance, a midget (first appearance, King Hubert (first appearance), other Cossacks (first appearance, N'Demo (first appearance), Sky Girl (Ginger Maguire), Bob Reynolds, Marcel Latouche (first appearance, Captain Hawk, Doc Hayward, Joe (first appearance, Count Ugo (first appearance, Jeremy, Betty Rand (first appearance, villain), Stuart Taylor, M'Bogo (first appearance), a hypnotist (first appearance), Packey (first appearance)