Headhunters leader; Illegal narcotics
A Real American Hero continuity
Marvel Comics continuity
Devil's Due Comics continuity
Headman is listed in G.I. Joe: America's Elite #31 as terminated by Cobra during a raid on The Coffin, where he was held, by Tomax and Cobra. While reviewing the "Prisoners Terminated" list, Storm Shadow explains, "Tomax... was able to eliminate those Cobra considered loose ends" (even though Headman was never portrayed as a member of Cobra).
DiC animated series
When Duke and a Crimson Guard discovered they both had relatives who were victims of Headman's drug dealing (Duke's brother, Lt. Falcon, and the Siegie's sister), they decided to join forces in order to make Headman fall. Duke and the D.E.F. fought side-to-side with Cobra and, in the final battle, headman tried to kill the Joes and Cobras with a massive drug overdose, but his overdose backfired to him. The dying Headman activated the self-destruction of his base and, even though the D.E.F. and Cobra escaped, Headman died, buried by his own base (the only confirmed death in the animated continuity).