Eve (The Last Dodo)

Eve was the curator at the Museum of the Last Ones she wanted to preserve The Doctor in he newly opened Gallifrey section she locked him up but Martha released him from captivity. But Frank a colleague of Eve's was cloning all the animals in the museum and skinning them and selling them to rich upper-class citizens of Earth. She had Dodo eggs discussed as bombs and she was going to destroy the Earth and kill every with in the planet. The Doctor and Martha were going to stop her so she fired a gun at Martha but it back Fired and killed Eve revealing that she was an Android not a human. In the End the Doctor disarmed the Bombs and saved Earth once again.