| Release: | Aug 26, 1958 |
| Cover: | Oct 1958 |
The Day Superman Betrayed Batman / The Menace of the Mechanical Octopus
| Release: | Aug 26, 1958 |
| Cover: | Oct 1958 |
The Day Superman Betrayed Batman - Professor Milo has developed a machine that can accurately predict the future, and the criminal element wants it. Batman, Robin and Superman try to prevent it, but it soon becomes difficult when film surfaces of Batman taking a bribe.
The Menace of the Mechanical Octopus - Criminals with the ability and finances to create a giant submersible mechanical octopus use it to steal from oceanliners. It's up to Green Arrow and Speedy to sink it.
| Writer | Bill Finger, Ed 'France' Herron |
| Cover Penciller | Curt Swan |
| Cover Inker | Stan Kaye |
| Penciller | Dick Sprang, Jack Kirby |
| Inker | Stan Kaye, Roz Kirby |
| Batman | Bruce Wayne |
| Superman | Kal-El / Clark Kent |
| Lois Lane | |
| Commissioner Gordon | James 'Jim' Gordon |
| Green Arrow | Oliver Queen |
| Robin | Dick Grayson |
| Speedy | Roy Harper |
| Professor Milo | |
| Condor | John Titus |
| Age | Silver Age |
|---|---|
| Format | Comic |
| Series Group | Superman / Batman |
| Genre | Action | Adventure | Super-Heroes |
| No. of Pages | 32 |
| Country | USA |
| Language | English |