Vikki

 was the fourteenth wife of Alvar Chambers. In the 22nd century, her body was taken over and consumed by an entity that existed in the reflection of the sea on Mars while she was on board Alvar's private cruise ship. Rose Tyler, with the help of the Ninth Doctor, found a way out for the entity's victims, including Vikki, but Alvar did not make it. (COMIC: The Cruel Sea)