William Dawson was a criminal whose body was taken over by Gorilla Grodd. After being released from prison, Grodd returned to Gorilla City, where Dawson's body devolved into a gorilla.  He later returned to exact his revenge on Grodd.
- This version of William Dawson (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.
- 5 Appearances of William Dawson (Earth-One)
- 1 Images featuring William Dawson (Earth-One)
- Quotations by or about William Dawson (Earth-One)
- Character Gallery: William Dawson (Earth-One)