Pre-production concept sketch for the 2002 Mike Young Productions Skeletor redesign. The MYP design leaned harder into the skull-and-armor biomechanical register than Filmation’s purple-cowled approach.
Catalogue source: heman.fandom.com (CC BY-SA 3.0) and the relevant studio archive.
Image: He-Man and the Masters of the Universe (2002) character render, via Wiki Grayskull (fair use).