Superboy discovers a rocket buried under the ground which contains artifacts from the planet Zumoor. Flying to Zumoor, he meets Mighty Boy, whose origins and powers are similar to his own.
Superboy discovers that his presence is having bizarre effects on his friend, so he leaves, vowing never to return.
- This version of Thomas Keith (Earth-One), including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- Just as Superboy has many important people in his life with the initials L.L., Mighty Boy has many friends with the initials C.K. (like Clark Kent).
- 2 Appearances of Thomas Keith (Earth-One)
- 1 Images featuring Thomas Keith (Earth-One)
- Quotations by or about Thomas Keith (Earth-One)
- Character Gallery: Thomas Keith (Earth-One)