Dexter Knox was a gifted boy scientist who was a neighbor and friend of Billy Batson.
- This version of Dexter Knox, 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.
- Shazam! #4 was Dexter Knox's first appearance in a comic published by DC Comics.
- 6 Appearances of Dexter Knox (Earth-S)
- 1 Images featuring Dexter Knox (Earth-S)
- Quotations by or about Dexter Knox (Earth-S)
- Character Gallery: Dexter Knox (Earth-S)