El Tigress was a revolutionary who contracted the criminal Johnny Scorn to supply her with explosives. She habitually wore a beret along with several bandoliers and smoked thin cigars.
During a visit to Scorn's quarry, El Tigress was introduced to Molene, another of Scorn's criminal associates. Molene was romantically interested in Scorn, and she believed that El Tigress was a rival for her affections. Molene took one of El Tigress' grenades and tossed it among Scorn's stash of explosives. El Tigress grappled with Molene, and Scorn escaped while the women fought.
The grenade exploded and set off more of the explosives in Scorn's facility. The blast killed Molene and El Tigress.