Broken slowly walked over to himself, a bit cautious about the man with his face. "I asked first. Who the hell are you? Where is Strax? And how the FUCK did you get in my TARDIS?" Broken shouted at the other man and slammed his fist on the console of the TARDIS. "You look like me, and you talk like me, but how the FUCK can you have my face and my voice?" The only time that this particular regeneration of the Doctor had another was with his Ganger. "WHO ARE YOU!?"
"You know full well who I am and I would’ve thought the answer was rather bloody obvious," XI snapped at his hostile double. "We’re either the same Time Lord from different points in the timeline - highly unlikely, and the TARDIS, my TARDIS would be spitting circuits - or, and this is the likelier or, we’re parallels. Kindly refrain from punching my ship.” He frowned, seeing that the control room looked not only different but somewhat warped. “Perhaps I should say: refrain from punching my half of the ship.”