Six months ago a man opened fire in a gay nightclub in Orlando and killed 49 people.

Like many other people, Marc Andreyko wanted to do something to help after the tragedy at the Pulse nightclub and to express the confusion and anger and despair he felt. Unlike many other people, Andreyko, a comics writer who has worked on "Batwoman" and "Wonder Woman '77," has a lot of talented friends.

"Love is Love," on sale today, is 144 pages of one- and two-page stories, vignettes, poems, and essays by some of the top talents in the comics industry. Contributors include Jim Lee, Paul Dini, Gail Simone, Mark Millar, Grant Morrison, G. Willow Wilson, Scott Snyder, Jill Thompson, George Perez, Matt Wagner, Amanda Connor, Phil Jimenez, Olivier Coipel and many, many more. There are also contributions from people outside the comics world such as Patton Oswalt, Damon Lindelof, Taran Killam, Matt Bomer, and Morgan Spurlock.

“When tragedy happens, art responds," Andreyko said,. "And after the Pulse massacre, the comics community responded quickly, decisively, and with open hearts.”

Some of the stories are terribly sad. Some are memories of the dead, such as Joshua Yehl's piece on his best friend Drew Leinonen, killed in the attack, or the story of Brenda McCool saving her son, written by Damon Lindelof. Some talk about the experiences of being gay, good and bad, in America. Some are abstract musings on love, survival, hatred and perseverance in ink and paint and watercolor and computer graphics. Some are them are cartoony. A few are simply portraits of those killed. Some of them are stark, harsh. Some are funny. Many of them are beautiful.

And some of them include guest stars.

DC Comics worked with IDW Publishing for "Love is Love" and many DC characters are there to show their support. Various LGBTQ characters such as Midnighter and Apollo, Harley Quinn and Poison Ivy, and Batwoman appear multiple times. Gail Simone, known for her inclusive team books, brought all of her gay, transexual, bi and asexual characters together for a dance party.

But Superman is there as well, and Batman, and Supergirl, and Wonder Woman, all showing support and love. There's even a few guest appearances by the Archie gang.

One notable appearance: a single image of Harry Potter with his friends Hermione and Ron, standing with Professor Dumbledore and creating a pride rainbow, making this Harry's official comic book debut. The quote under Jim Lee's illustration is Dumbledore's, from "Harry Potter and the Goblet of Fire": "Differences of habit and language are nothing at all if our aims are identical and our hearts are open.”

Writer J.K. Rowling told fans in 2007 after the series was completed that Dumbledore was gay.

"Love is Love" is $9.99 and is available at local comic book stores or at Comixology.com. All proceeds go to Equality Florida, which means 100% of the money they make since everything in the book -- writers, artists, colorists, the letterers, the editors, the paper, the presses -- was donated.

The original art itself is coming to Orlando in 2017. "In May, we’re going to Orlando MegaCon and doing a live auction with all the original art for the book," Andreyko told IGN.com. "All the original art is going to be auctioned off and all that money will help the survivors and the families."

"Love is Love" is a melancholy, and ultimately defiant book. There are some political overtones here and there but Andreyko didn't want the book to be, as he said in an interview at IGN.com, "angry and bitter."

"I wanted this book to honor the people that were lost," he said.