J.M. DeMatteis

J. M. DeMatteis is an American writer. Dematteis wrote the screenplay for titles As Batman Vs. Robin and Batman: Bad Blood. He also wrote the story with Ernie Altbacker for Justice League: DARK. 
==Credits==
===Writer===
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*Batman: Bad Blood
*Justice League Dark (Co-Story Writer)
*Constantine: City of Demons
== References ==
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Category:Crew