Greeneye

Greeneye was one of a family of Aubertides that followed the Seventh Doctor to Earth in 1914 in an attempt to gain his biodata and thus his regenerative abilities. A man of guile, he notably impersonated his fanciful ideas of what the Doctor's tenth self might be, long before the Doctor had reached that regeneration, while trying to trick Bernice Summerfield. (PROSE: Human Nature)