OGS "Original Graffiti Showdown" - Ominous Rook

This grim OG is a master of dark arts.
His demonic powers grant him the ability to summon unquenchable flames straight from hell!
His name is infamous among writers, everyone knows how dangerous he is, but fortunately Ominous Rook and his misterious writer are rarely seen around, they only show up for unknown reasons.