Alien from the dimension of Xarapion, when Carl Sands helped him from the Earth dimension, he gave him the dimensiometer device which Sands used as the Shadow Thief. Thar Dan would aid Hawkman and Hawkgirl in defeating Shadow Thief on a number of occasions.
- This version of Thar Dan (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.
- 4 Appearances of Thar Dan (Earth-One)
- 1 Images featuring Thar Dan (Earth-One)
- Quotations by or about Thar Dan (Earth-One)
- Character Gallery: Thar Dan (Earth-One)