Barbara Minerva (Earth-1: Pre-Crisis)

Barbara Ann Minerva is the supervillain known as Cheetah and a member of Task Force X.

Task Force X
At some point, Minerva became the supervillain known as Cheetah and was incarcerated at A.R.G.U.S. Headquarters, becoming a member of Task Force X. When Barry Allen and Leonard Snart were searching for the Dominators' power source, they passed by Cheetah's cell.

Crisis on Infinite Earths
On December 10, 2019, Minerva, and everyone else on Earth-1 aside from the seven Paragons, were presumably vaporized by a wave of Antimatter during the Crisis.