Tatjana Stiles

1st app.- Journey into Mystery #520

Tatjana Stiles was a CIA agent, assigned with her partner, Andrew. The two of them raided an overseas factory that was producing chemical weapons, and were attacked there by the vampire Navarro. While downloading the computer codex to the weapons, Tatjana learnt from the database of Hannibal King, who Navarro considered an enemy. Tatjana and Andrew went their separate ways, dividing the codex between them.
After Andrew was killed by Navarro's men, Tatjana went to Hannibal King, posing as Andrew's widow, and hired him to find out who had killed him.
After his first encounter with Navarro, King confronted Tatjana, and she confessed her true backstory to him. She then assisted King in raiding several clubs, looking for vampires who served Navarro. They finally found a lead to Navarro's base, an old steel mill, and invaded it.
Separated from King, Tatjana was captured by Navarro's men, who tore, bit, and slashed at her, horribly disfiguring her. Presenting her to King, Navarro convinced him to turn over the codex, which Tatjana had worn around her neck all the time. After Navarro explained his plan for using chemical weapons to force humanity to convert to vampirism, King set off explosives he had planted earlier, destroying the mill as he escaped with Tatjana in his arms.
King brought Tatjana to a hospital, but they were unable to treat her, due to the vampire toxins in her blood. She begged King to release her to make her a vampire-- and he complied. Tatjana still serves the CIA, now draining the blood from their enemies.

Credit- marvunapp.com