Masters of the Universe Masterverse Skeletor Action Figure and Throne Set, Motu Toy, Lighted Throne, Detachable Hood and Cape, 2 Rod Accessories, HXX63

The shins and feet are obviously from an Evil Horde figure. It looks like they're from the original Masterverse Hordak. The head is from some Alcala-based Skeletor... maybe from the Masterverse New Eternia Skeletor with Throne set. You also could try asking in the r/MastersOfTheUniverse subreddit.