The last few years has seen a burst of DC Comics-based shows arrive on TV screens, from The CW's small empire of Arrow, The Flash and Legends of Tomorrow to shows like Supergirl, Gotham, Constantine and Lucifer - all scattered across various networks. Constantine, based on the Hellblazer comics and starring British newcomer Matt Ryan, is probably the least successful of the four shows that have debuted so far, as it was canceled after just one season with no hope of renewal.
While John Constantine's own series may have come to an end, however, he still has a chance of being absorbed into the ever-growing DC TV universe on The CW. While Constantine was searching for a new home, Arrow lead Stephen Amell offered to guest star as Oliver Queen in the show if it was picked up for a second season. Amell later said that the idea of a crossover between the two shows was "still on the table," since despite airing on different networks both Arrow and Constantine are produced by Warner Bros. Television.
During Comic-Con 2015 Amell promised "a nice new element of magic and mysticism" on the way in season four of Arrow, which will also introduce Neal McDonough as new villain Damien Darhk. Given that Constantine is a bit of an expert on mysticism and magic, now more than ever it would make sense for Ryan to put on his trench coat again and guest star in the show. Luckily for Constantine fans, Arrow co-showrunner Wendy Mericle revealed in an interview with IGN that this is something the producers are still very much pushing for.
"Yeah, we really want to do it. It's something we've been talking to DC about and it's just a question of certain political things, but also the actor's schedule. We're trying to work it out, but we don't know 100 percent if it's going to happen... We're really optimistic and we would love to have him, it would be very exciting."
Although Constantine's ratings couldn't quite justify its budget for NBC, and we had our own reservations about the overall quality of the show, it did cultivate a small but sincere fanbase that kept the "#SaveConstantine" campaign going for quite a while on social media. Eventually showrunner Daniel Cerone had to break the news that season two just wasn't going to happen, but a lot of people liked Ryan's take on the character and would be interested to see him return to the role.
Arrow has already featured a massive array of heroes, villains and other characters from the pages of DC Comics, so John Constantine wouldn't be out of place and could even help bring an interesting new element to the show. A crossover would also open up the possibility of Arrow fostering other Constantine characters, such as Jim Corrigan a.k.a. The Spectre (Emmett J. Scanlan), whose transformation into a supernatural being was set up but never paid off.
Arrow returns for season 4 Wednesday, October 7th, at 8PM on The CW; The Flash returns for season 2 Tuesday, October 6th, at 8PM on The CW; Legends of Tomorrow is expected to air on The CW in early 2016.