Tigra

A mystic ritual gave Greer Nelson razor sharp claws, enhanced senses, and the strength and speed of a tiger. But it also gave her a primal instinct that she has struggled to control ever since. Whether as part of the Avengers or not, Tigra's passion for justice has carried her through her toughest battles.

Earth's Mightiest
Tigra defeated Big Bertha in the opening round, but lost to Iron Fist in the second.