Read more about Thog at: Wikipedia

Official Site: Marvel comics

Thog the Nether-Spawn, Overmaster of Sominus is a fictional character appearing in the Marvel Comics universe. He is a demon from the extra-dimensional world of Sominus who has clashed with the Man-Thing.

Thog first appeared in Adventure into Fear #11 (December 1972), Steve Gerber's first work for Marvel, illustrated by Val Mayerik.

Thog's subsequent appearances include in Fear #13 (April 1973), The Man-Thing #1 (January 1974), #20-22 (August-October 1975), The Man-Thing (vol. 2) #11 (July 1981), The Defenders #99-100 (September-October 1981), Ghost Rider (vol. 2) #77 (February 1983), Doctor Strange, Sorceror Supreme #8 (October 1989) and Annual 2 (1992), and Magik (vol. 2). #3 (February 2001).

Thog was given his own entry in The Official Handbook of the Marvel Universe: Horror (2005) and in The Official Handbook of the Marvel Universe A-Z. In the earlier editions, he appeared in a group entry under "demons."

Thog has not been a contender in any CBUB matches.