Superman #228 is an issue of the series Superman (Volume 1) with a cover date of July, 1970. It was published on May 5, 1970.
Synopsis for "The Mystery Bombers!"
Two slave programmers from space impersonate Earth people and conduct a bombing campaign as part of a gimmick to siphon off knowledge from Superman.
Appearing in "The Mystery Bombers!"
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- The TNT Twosome
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Synopsis for "Execution Planet!"
After Superman inexplicably loses his powers, the Anti-Superman Gang capture him, auction off his costume, and send him in a rocket to the Execution Planet.
Appearing in "Execution Planet!"
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