Camilla Reyes (Leonor Varela) is the main villainess from "0-8-4," the second-ever episode of Marvel's Agents of SHIELD (airdate October 1, 2013). She is the commandant of an army in Peru, where the S.H.I.E.L.D. agents head to in order to retrieve a dangerous weapon simply known as "0-8-4."
After an attack, Phil Coulson and his agents take Camilla and her army to safety in their plane, but while there, Coulson discovers that he and his agents are being set up by Camilla and her army, leading to a verbal confrontation. At that moment, Camilla turned heel and attacked Coulson, while her cohorts captured the rest of the agents.
Shortly afterwards, the evil Camilla revealed her plan to take possession of 0-8-4 for herself and use it to rule over her entire army. Her plan is eventually thwarted, and while Coulson does save Camilla from being flown off the plane, he does subdue and hold her captive.