The MK XIII was a new version of the Tri-Sentinel 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 XIII and other Sentinels were destroyed by the Phoenix Five.
- 1 Appearances of Sentinel MK XIII
- Minor Appearances of Sentinel MK XIII
- Media Sentinel MK XIII was Mentioned in
- 1 Images featuring Sentinel MK XIII
- Item Gallery: Sentinel MK XIII