Thorndyke Thompkins, alias Second Sweep, was a member of the Minute Men of America, a group of teen heroes who fought alongside the first Hourman in the 1940s, taking a variant of the Miraclo Pills that gave them super-powers for one minute at a time. Thompkins was one of the most active members, and even replaced Jimmy "Minute-Man" Martin as Hourman's foremost sidekick.
In his later years, the aged Thorndyke returned part-time to the Second Sweep identity as a member of Old Justice.
- Power Limitation: The effects of his Miraclo wear off after one minute.
- Advanced Age: Thompkins is an elderly man and requires a walker to move when not under the effects of Miraclo.
- 30 Appearances of Thorndyke Thompkins (New Earth)
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