Tom Mandrake
Tom Mandrake ( born 1956 ) is an American comics artist , perhaps best known for his collaborations with writer John Ostrander on several series , including "Grimjack" ( from First Comics ) and "Firestorm" , "The Spectre" , and "Martian Manhunter" from DC Comics . <ref name="John/Tom">John Ostrander and Tom Mandrake collaborations at the Grand Comics Database</ref> 
<triplet> Grimjack <subj> John Ostrander <obj> creator