Metaltron (Kamen Rider Ex)

Metaltron was once a Dalek, supposedly the last of the Daleks after the Last Great Time War between the Daleks and the Time Lords. When she was a Dalek, she was captured by Henry Van Statten and put into his vault. She was tortured to try and talk, but the arrival of the Doctor sparked her old instincts. She then tricked the Doctor’s companion at the time to let her absorb her DNA. Over time, the companion’s DNA affected it, gave it emotions other than hate. It tried to commit suicide, but it was flung into the dimensional rift that makes up the space between universes. She was then rescued by Vorton, looking like the Doctor’s companion and with amnesia. The amnesia then wore off and she tried to kill another Dalek turned human, one that preferred her bipedal shape. She then joined with a Human/Dalek hybrid, the Last of the Cult of Skaro, Caan, and temporarily used Van Statten’s old place as a base of operations. She then abandoned him and altered her genes even further during the Convergence and made an alliance with a former Cyberman. Now, she is Kamen Rider Ex, the deadliest warrior in creation. She is one of seven rulers of the new Shocker Umbra and is at the top of a very successful empire. With the Author in her life, she can’t refuse a chance at power.