 Standard TARDISes do not generally seem to use any on-board weaponry, although War or Battle TARDISes (armed with "time torpedoes" that freeze their target in time) have appeared in the spin-off media.In the novels, the Eighth Doctor's companion Compassion, a living TARDIS, has enough firepower to annihilate other TARDISes.In the serial "Castrovalva", the Master's TARDIS is equipped with an energy field that he uses to temporarily disable or stun several human security guards outside the vessel.