Bazima

Bazima was a companion of the Eighth Doctor.

Biography
Bazima was a "fashion genegineer" who plotted to alter the DNA of her people over the generations so they could overthrow the Gati, the aliens occupying her planet. (ST: Nettles)

Whilst travelling with the Doctor, Bazima travelled to Metebelis III, Valdamen, Earth, Katonsis and Raag. For her last trip, the Doctor took Bazima to Valdamar IV to show her that her work would eventually succeed. (ST: Transmission Ends)

The Doctor came to visit Bazima later in her life to help her alter the DNA of her people. (ST: Nettles)