The MK XII were a swarm of winged Sentinels designed by Maximilian Frankenstein for Kilgore Arms. When they went up for auction on a private island in the Indian Ocean, the MK XI and other Sentinels were destroyed by the Phoenix Five.
- 1 Appearances of Sentinel MK XII
- Minor Appearances of Sentinel MK XII
- Media Sentinel MK XII was Mentioned in
- 1 Images featuring Sentinel MK XII
- Item Gallery: Sentinel MK XII