Skith Leader
The Skith Leader was a red coloured Skith who was in charge of a group of Skith the Doctor encountered in 1915. When the Skith tried to invade in the arctic, the leader came up with a plan to get hold of the Doctor's TARDIS. He was defeated by the Doctor and thought dead. (DWM: The First)
However, he survived and had rebuilt Skith forces. He allied with Fanson, a friend of Majenta Pryce. In 2010, he and the Skith planned to make a Skardisfrom the information they gotby mind probing the Doctor. However the Skith General betrayed him and pushed him down the Mindcore. He survived this attack but died once the Skith General shot him. (DWM: The Age of Ice)