The HBO fantasy epic's conclusion enraged fans around the world, and organizers of the pop culture convention reminded attendees before the retrospective panel to make the cast "feel welcome."

While the cast drew a rapturous reception, Nikolaj Coster-Waldau -- who played Jaime Lannister -- was booed after describing his character's death in the arms of his sister and lover Cersei as "perfect."

"It made sense to me," said the actor, before being interrupted by a heckler.

"This show has brought so many people together, watching it, loving it. So obviously when it comes to an end it's going to piss you off no matter what... just don't call people names," he added. 

An online petition to HBO to remake the final season with "competent writers" was signed by 1.6 million people.

The panel was billed as the show creators' first public outing following the backlash.

But showrunners David Benioff and Dan Weiss quietly withdrew along with two cast members earlier in the week.

The remaining members expressed support for the final season. Conleth Hill -- who played Varys -- described the fan response to the show over the years as extremely positive, referring to the negativity as a "media-led hate campaign."

The atmosphere quickly lightened as cast members joked about stealing props from the set.

John Bradley, known to fans as Samwell Tarly, addressed another controversy, shooting down theories that he was to blame for a plastic water bottle accidentally left in shot during the final season.

"Pardon me for being thirsty," he joked.

TV takes over

After Hollywood film stars Tom Cruise and Arnold Schwarzenegger dominated Thursday's opening day, television took center stage at Comic-Con Friday.

Netflix surprised attendees by screening the first episode of "The Dark Crystal: Age of Resistance," its upcoming prequel series to Jim Henson's classic 1982 fantasy film.

Its combination of old-fashioned puppetry and cutting-edge visual effects aims to cast a spell on old and young alike.

Mark Hamill and "Rocketman" star Taron Egerton -- who both provide voices -- appeared in a panel discussion.

Fan favorite Hamill was presented with Comic-Con's "Icon Award," telling the audience he felt lucky "to be able to do all the things I loved as a kid and get paid for it."

"This is just seems wildly excessive," the "Star Wars" actor joked about the accolade, before serenading the crowd with his "Buddi" song from the film "Child's Play."

Amazon Prime wheeled out "Carnival Row," starring Orlando Bloom and Cara Delevingne, which is set in a fantastical Victorian-esque world filled with mythological immigrant creatures. 

Bloom said it was a "great gift and opportunity" to be in a show which was "so timely and... spoke to a lot of the issues with relevance to what's happening in the world today."

AMC used its annual "Walking Dead" franchise panels to confirm veteran Danai Gurira -- who appeared in the recent blockbuster "Avengers" movies -- will depart the zombie show.

Gurira, who first appeared on the series in 2012, received a standing ovation.

Plans were also teased for a series of films starring Andrew Lincoln, who announced his own departure from the show -- the highest rated series in cable television history -- at last year's Comic-Con.

Read also: 'Thrones' no-shows, puppets galore: Comic-Con takeaways

Avengers eye record

Earlier, "Avengers: Endgame" directors Joe and Anthony Russo said it would be a "big thrill" to pass the all-time box office record held by "Avatar," as they set out plans to collaborate with a number of different stars from the Marvel superhero universe.

"Endgame" is inching ever closer to surpassing James Cameron’s $2.788 billion haul. It is currently just $5 million short, and was still playing in 1,400 US theaters at the weekend despite being released in April.

"James Cameron has always been an idol of ours... to be so close to one of his great films is really special," said Anthony.

The filmmaking brothers said their next project "Cherry," starring "Spider-Man" actor Tom Holland, will be a "mature" and "complicated" look at the US opioid crisis.

"It's touched our families, the crisis, so it's a deeply personal movie for us," said Anthony. Filming will begin in October.

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