SAN DIEGO (AP) >> Four DC comics brought to life for television took over the San Diego Convention Center’s 6,500 seat Hall H at Comic-Con Saturday night.

“Arrow” star, Stephen Amell, hosted the extravaganza called “Warner Bros. Television Presents a Night of DC Entertainment.”

He introduced actors Ben McKenzie, Grant Gustin and Matt Ryan before the world premiere of Fox’s “Gotham”, a screening of The CW’s first episode of “The Flash” and footage from the upcoming third season of CW’s “Arrow.”  At the end of the night they played the pilot for NBC’s “Constantine” for fans who sat through the three hour event.

In the “Arrow” footage, it was revealed that DC villain Ra’s al Ghul will appear in Season 3. The part has not yet been cast.

The hero character Ted Grant, known as Wildcat, will also be introduced.

Following the screenings, the cast and producers of all four shows participated a in panel session hosted by Geoff Johns of DC Comics.

“Gotham” premieres on FOX Sept. 22, “The Flash” debuts Oct. 7 on The CW, “Arrow” returns to The CW Oct. 8 and “Constantine” comes to NBC on Oct. 24.