The MK XI was a all-terrain version of Sentinels which was 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 XI
- Minor Appearances of Sentinel MK XI
- Media Sentinel MK XI was Mentioned in
- 1 Images featuring Sentinel MK XI
- Item Gallery: Sentinel MK XI