Albert (The Mutant Phase)

Albert was one of the surviving humans after The Mutant Phase attacked the Earth in the 43rd century. At some point, when the Thal scientist Ptolem was discovering what had killed the mutant phase on earth, he was used by the Daleks as an informent. He alerted them to where The Doctor was. The was ultimately killed by the Daleks. (BFA:The Mutant Phase (audio story))