SAN DIEGO - Walt Disney Co's Marvel Studios on Saturday (July 20) unveiled a star-packed slate of superhero films for the next two years that includes Angelina Jolie in The Eternals, Mahershala Ali in a remake of Blade and Natalie Portman as a female Thor.

The announcements at San Diego Comic-Con charts Marvel's course following mega-blockbuster Avengers: Endgame, which Disney said was set to top 2009 film Avatar by Sunday as the highest-grossing movie of all time.

Jolie appeared on stage in front of 6,500 cheering fans, along with other Eternals cast members including Richard Madden, Kumail Nanjiani and Salma Hayek. The story about a group of immortal aliens will debut in November 2020.

"I'm going to work 10 times harder," Jolie said when asked how she would approach her role of Thena. "We all know what the task is ahead, and we know what you deserve, and so we are all going to be working very hard."

"So I am in training and thrilled," she added.

Disney also revealed it will release Thor: Love And Thunder, the fourth Thor movie, in November 2021. Portman, who starred in earlier films as the girlfriend to Chris Hemsworth's Thor, will take up the superhero's hammer as a female goddess of thunder.

"It feels pretty good," Portman said on stage. "I've always had a little hammer envy."

Ali, who recently won Oscars for Moonlight and Green Book, surprised the audience by walking on stage and putting on a baseball hat with the logo for Blade, a character played on film in 1998 by Wesley Snipes. No details were given but the crowed erupted in applause.

The films will be part of Phase 4 of the Marvel Cinematic Universe (MCU) that started with 2008's Iron Man and has generated more than US$22 billion (S$29.9 billion) at box offices worldwide.

Other coming movies include Doctor Strange In The Multiverse Of Madness, which director Scott Derrickson described as "the first scary MCU movie", and Shang-Chi And The Legend Of The Ten Rings starring Chinese actor Tony Leung, Awkwafina and newcomer Simu Liu, who said he was just cast in the lead role on Tuesday.

Scarlett Johansson introduced an action-heavy trailer for Black Widow. In an interview, the actress said having a stand-alone film for the Avengers character was "mind-blowing".

"I hope it adds a gritty kind of groundedness, that's like a good punch in the gut, and a literal punch in the gut too," she said. "We all get the crap beaten out of us!"

Marvel Studios President Kevin Feige confirmed a forthcoming Fantastic Four film and sequels to Black Panther and Captain America.

Feige also previewed Marvel series being made for the Disney+ streaming TV service that will debut in November. They include Loki, Hawkeye and animated What If.

The stories told on Disney+ will weave into Marvel's movie, Feige said. For example, Elizabeth Olsen's Wanda will star in the WandaVision series and in the new Doctor Strange film.

"The same teams that work on the movies are going to be working on these mega-event limited series," Feige said in an interview. "They are completely intertwined."