A planet was colonised by the Sontarans. Touching down in his TARDIS, the Master set himself up as a messiah there. A century or two after he left, the 17th Veteran Cohort came to the colony planet with the purpose of wiping out the Sontarans infected by the Master. A Suicide Specialist Sontaran destroyed the bearded Sontarans along with the entire planet. (COMIC: The Judas Goatee)
Tardis