War TARDIS

War TARDISes were used by the Time Lords in the lead up to The War prior to them obtaining the Type 102 sentient TARDIS. War TARDISes were reared/born/controlled via a Bull-TARDIS in the time vortex. (EDA: The Taking of Planet 5)

They could map their exterior dimensions onto the outer dimensions making for an imposing sight, they could not withstand many shots of weapons fire from the first Type-102 TARDIS known as Compassion. (EDA: The Ancestor Cell)