Cobb (The Doctor's Daughter)
From Tardis Wiki, the free Doctor Who reference
Cobb is a general encountered by the Doctor, Donna and Martha Jones on the planet of Messaline. He is the general over Klien and the Doctor's daughter, Jenny. In the trailer he asks the Doctor to join them in the war against the Hath, the creatures living on Messaline. Both the humans and the Hath desire something called the Source.