Comic book fans mark your calendars: the cast of "Guardians of the Galaxy 2"  is joining the San Diego Comic-Con next month.

This was revealed by no less than the film's director James Gunn who released a special video message for fans, reported Variety.

Gunn made the announcement, as the film's lead star Chris Pratt wrapped up filming for the highly-anticipated sci-fi sequel, which is scheduled to premiere on May 5, 2017.

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The four-minute video, which was posted on Gunn's Facebook page, showed the director lauding Prat and the film's crew for their outstanding work.

"Everyone here has busted their asses," Pratt said, as he addressed the cast and crew of "Guardians of the Galaxy 2." "This is going to be the greatest spectacle film of all time."

For his part, Pratt praised Gunn for keeping the film's shoot on schedule  despite the movie tight 90-day schedule and being "under budget."

It was towards the end of the video when Gunn announced that the film's cast and crew will be attending this year's Comic Con, which will run from July 22-24.

"We, 'Guardians of the Galaxy Vol. 2,' are coming to San Diego Comic-Con this year," Gunn said.

"We're going to be there, I'm going to be there, Chris Pratt is going to be there, a bunch of the gang is going this year and we're going to show you something pretty cool," he added.

Marvel created a stir three years ago when it released a sizzle reel for the original "Guardians of the Galaxy" movie.

The movie, which featured a bund of intergalactic misfits with a dark past, stunned the industry by earning more than $770 million worldwide.

The "Guardians of the Galaxy 2" cast include Zoe Saldana, Dave Bautista, Vin Diesel, Bradley Cooper, Lee Pace, Michael Rooker, Karen Gillan and Djimon Hounsou.

TagsGuardians of the Galaxy 2, Guardians of the Galaxy Cast, Guardians of the Galaxy Chris Pratt