Dorothy Bell

Dorothy Bell was a film actress.

She accidentally merged with a quantum harvester, restoring her youth and giving her vast powers. (COMIC: The Fountains of Forever) She went around "improving" New York City, like increasing the height of the Empire State Building and creating bridges to New Jersey. (COMIC: Spiral Staircase)

Anubis arrived soon after, and believed she was the manifestation of the key of Horus. He wanted to use her powers to build a gateway to join his fellow Osirans. This could potentially destroy the universe, and the Tenth Doctor convinced him to delay his plans for five thousand life cycles. Dorothy decided to stay with him. (COMIC: Sins of the Father)