One of the most exciting comics crossovers in years is coming this fall, and it all starts with a surprise preview this month for Free Comic Book Day! The most historic family of heroes in comics and one of the most unique families originating from animation meet each other in an unforgettable tale in Gargoyles / Fantastic Four this October.

Fans will not want to miss the release of Gargoyles: Demona #0. The Free Comic Book Day release, out May 3, the first Saturday of the month, primarily kicks off the next exciting chapter of the core Gargoyles saga. Franchise creator and longtime chronicler Greg Weisman is joined by original series co-producer Frank Paur for a centuries-spanning look at the hero-turned-villainess’ life — including never before revealed family members and pivotal moments. The full series will follow the FCBD release.

Tucked in the back of this release that is completely free to readers is a shocking sneak peek for one of the next Gargoyles tales, an unexpected crossover for the ages!

The original Dynamite era Gargoyles creative team of writer Greg Weisman, artist George Kambadais, and letterer Jeff Eckleberry reunite for this epic tale.

Key members of the Manhattan Clan, including Goliath, Elisa Maza, Brooklyn, Katana and Nashville have been invited on a tour of one of the most impressive and technologically advanced buildings in their adopted home of New York City — the Baxter Building. Everything goes awry when a fearsome cast of foes from both mythos cross paths, including Coldsteel, the Gargoyle aka Yuri Topolov, and the deadly Annihilus.

Fans will get to enjoy Franklin and Valeria bonding with Gnash, at least until everything gets out of control. Then both families — including Mister Fantastic, Invisible Woman, the Thing, the Human Torch, Broadway and Angela — will have to team up, split into teams, and save the day across Manhattan, the Negative Zone, and beyond.

Featuring covers by Dynamite all-star Lucio Parrillo, Fantastic Four veteran Mark Bagley, Gargoyles icon Amanda Conner, and more, further details on the full special release scheduled for this October will follow soon.