Pep Comics #15 (cover date May 1941, MLJ Magazines Inc.) is the Golden Age anthology issue that marks the first visual appearance of Madam Satan — one of comics' most culturally durable supernatural villainesses — whose unmistakable visage appears on the cover drawn by Irv Novick, though her story did not begin until issue #16. The cover itself, annotated by the Grand Comics Database with keywords "blow guns; bondage; torture," depicts The Shield [Joe Higgins] subjected to poison-dart torture while Madam Satan haunts the background — a rare pre-war image of supernatural villainy combined with patriotic heroism. The 68-page full-color issue otherwise contains the full MLJ anthology line: a two-part Shield story by Harry Shorten and Irv Novick (including the introduction of the Shield G-Man Club); the final appearance of test-pilot strip "Lucky Larson"; adventure features for The Comet, The Fireball, Kayo Ward, Danny in Wonderland, Sergeant Boyle (Charles Biro), The Midshipman, and Bentley of Scotland Yard (Sam Cooper). Cover price: $0.10.

Pep Comics is a Golden Age anthology published by MLJ Magazines Inc. — the Archie Comics predecessor — featuring The Shield (the first patriotic superhero), The Comet, Madam Satan, The Hangman, and, from issue #22, Archie Andrews himself. The first depiction of Madam Satan appeared on the cover of Pep Comics #15 (May 1941), though the character only appeared in issues #16–21 before being cancelled to make room for Archie Andrews in issue #22. The character — created by editor-writer Abner Sundell and artist Harry Lucey for issue #16 — is described in the original series as a dead mortal woman transformed by Satan into his supernatural consort, deployed to seduce and destroy men's souls on Earth. The origin story depicted a mortal named Tyra who was driven to murder by jealousy, killed by her fiancé, and summoned to Bald Mountain — said to be frequented by Satan — where she was transformed into a sinister and enchanting supernatural force of chaos; her ongoing struggle with the celestial exorcist Brother Sunshine became the series' recurring theme.

Today, Pep Comics #15 is a prized Golden Age key issue: it records as the "1st cover appearance of Madam Satan, cover only" with current market values between $150 and $2,100+ depending on grade. The cultural stakes are considerable — Madam Satan's most recent mass-media revival came through the Chilling Adventures of Sabrina Netflix television series, where the character appeared as a recurring antagonist under the alias Mary Wardwell. The cover by Irv Novick — now recognized as a key example of pre-war "bondage cover" aesthetics and early horror iconography — carries particular art-historical significance as the first visual design of a character who has persisted for over 80 years.