NBC greenlights Constantine series as DC suddenly starts conquering TVRob Bricken1/14/14 3:26pm1393EditPromoteGo to permalinkYesterday, Gotham. Before that, The Flash and Arrow. Now NBC has ordered a full pilot for a series based on Constantine, a.k.a. Hellblazer, and suddenly Marvel's Agents of S.H.I.E.L.D. and in-development Netflix series are looking more than a bit anemic.