The fan-favorite creative team of writer Scott Snyder and artist Greg Capullo are reuniting for “Dark Nights: Metal,” a six-issue miniseries that begins in August. (DC Entertainment)

Scott Snyder began plotting his Batman reunion with artist Greg Capullo before the fan-favorite pair had even finished their five-year run on “Batman” in 2016.

On Sunday, Snyder and Capullo’s reunion became official at Fan Expo Dallas when DC Comics announced “Dark Nights: Metal,” a six-issue miniseries that will debut in August, featuring Batman and many other major heroes and villains in the DC Comics Universe.

“I couldn’t be more excited. This is the story I’ve been waiting to do for a long time with Greg,” Snyder told The Washington Post’s Comic Riffs from Dallas.

Snyder says “Dark Nights: Metal” will center on a mystery involving the Nth metal, an element that is a part of the world of classic DC characters Hawkman (recently deceased) and Hawkgirl, and will give him a chance to take Batman places he’s never been before.

“I’ve never gotten to write 90 percent of the characters that are in this [story],” Snyder said. “Just to see Greg draw them is hugely thrilling.”

Snyder says he’s never spent as much time plotting a story as he has during his preparation for “Dark Nights: Metal.”

“I spent a good part of the year reading every DC event from history just to make sure I had my math right,” Snyder said.

Snyder and Capullo are close friends. The two have spoken weekly since their “Batman” run came to an end. Snyder has constantly updated Capullo on plot points for “Dark Nights: Metal” while the two have been busy with their other post-Batman projects. Snyder continues to write his creator-owned works and “All-Star Batman” for DC, using the title as an experimental way to take Batman “off road” with various artists. Capullo has been illustrating his creator-owned series “Reborn,” a collaboration with writer Mark Millar at Image Comics.

But the two always have Batman on the brain, and Snyder says they have been anticipating this reunion.

Despite the title, Snyder says this miniseries will not be as dark as his and Capullo’s previous bat-works such as “The Court of Owls,” “Death of the Family,” “Zero Year” and “Superheavy.”

“In terms of tones and sensibility I want to make it really clear to fans and readers that this one is wholly celebratory. It’s not a grim, dark event in any way shape or form,” Snyder said. “It’s really meant to be something that says thank you to the fans shows a love of the DCU in all kinds of ways in terms of the characters that appear in the story.”

“Dark Nights: Metal” will be filled with Easter eggs for fans who have read all of Snyder and Capullo’s run. The major plotting has been done over the past year, but Snyder has dropped hints about “Dark Nights: Metal” all throughout his five-year “Batman” run with Capullo.

“If you’ve read our run, your experience of it will be enriched. But you don’t need to have read anything that we did before to read [Dark Nights: Metal],” Snyder said.

“It’s really designed to be something that can be picked up by anybody that wants to have a really fun summer, reading a DC event that is definitely going to the absolutely limit of how far we can push the bonkers fun of a story like this.”

For Snyder, if he and Capullo were going to reunite, he wanted to create something unlike anything the duo had done before.

Snyder said, “If we’re getting back together, let’s do something that touches on all this stuff that we did and uses Batman as the main character, but then takes you on a ride you never expected. To space and back and every zany corner of the DCU that you’ve wanted to go, but didn’t think we would ever touch.”

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