Medicus Androkan was a Gallifreyan scientist during the Dark Times. He took great interest in the Doctor's Time Lord DNA, and later assisted him in escaping the shadow planetoid. He was surprised to learn that the Doctor was a time traveller, as the concept was entirely novel during the Dark Times.
After infiltrating a Coffin ship and being captured by Drogann, he was killed by Friar Grystok, due to his apparent uselessness for blood consumption. (COMIC: Monstrous Beauty)