Felicity (He Kills Me, He Kills Me Not)
Felicity was the artificially created daughter of a wealthy man, who had her designed to love him more than anything else. However, she fell in love with Sophie Russell, which caused her father to hire Brian the Ood to kill Sophie and return Felicity to him.
After attempting to fight Brian, their ship crashed onto Atharna, and after Sophie fled, Felicity and Brian encountered the Eighth Doctor when he landed shortly after. Brian was subdued and defeated with the help of Katherine Steele, Samson and Craddock - the latter of whom gave his life to try and stop him. The Doctor was able to take Brian off the planet with his TARDIS.
After they left, Felicity and Sophie decided to stay a short while on Atharna. (AUDIO: He Kills Me, He Kills Me Not)