Cheetah (Earth-1: Pre-Crisis)

"Cheetah" was an A.R.G.U.S. inmate.

Biography
When Barry Allen and Leonard Snart broke into A.R.G.U.S.'s headquarters, they passed by multiple cells with one identified as Cheetah's cell.

Trivia

 * In the comics, Cheetah is an enemy of Wonder Woman. She is a feline curse with the power of the cheetah.