<em>Avengers: Endgame, </em>the concluding chapter in the Marvel superhero saga from Walt Disney, is set to topple James Cameron's <em>Avatar </em>on Sunday to become the highest-grossing film of all time. Disney re-released the film with new footage in late June for a final push as <em>Endgame </em>closed in on the record. It has now taken in $2.79 billion (Dh10.2bn) in theatres worldwide as of Friday, the company said, just $500,000 short of <em>Avatar.</em> "<em>Endgame </em>will close this gap by tomorrow," Disney said in a statement on Saturday. Grabbing the No 1 spot caps an extraordinary run for Marvel and the <em>Avengers </em>in particular. The four pictures in the superhero mash-up averaged $652.5 million in domestic ticket sales, and the 23 films in the Marvel Cinematic Universe, dating back to <em>Iron Man </em>in 2008, rank as the top-grossing movie franchise. The Marvel characters have continued their run of successes this summer with Sony's <em>Spider-Man: Far From Home</em> dominating theatres now. As of July 14, the film had taken in $847m in worldwide ticket sales. Disney punched up the re-release of <em>Endgame</em> with a tribute to the late Marvel pioneer Stan Lee, an unfinished scene and a sneak peek at a scene in <em>Far From Home</em>. Fans also got an exclusive poster. Disney has had a run of box-office successes built around Marvel, <em>Star Wars</em> and Pixar movies that have made it the industry leader. With its acquisition of 21st Century Fox properties for $71bn this year, Disney will also be home to <em>Avatar</em> sequels that Cameron plans to begin rolling out in 2021. In inflation-adjusted terms, <em>Endgame</em> ranks No 16 on the all-time list, according to Box Office Mojo. <em>Gone With the Wind</em>, released in 1939, tops the list on that basis. Marvel also revealed a new slate of films on Saturday, reassuring fans that the most successful film series in Hollywood history will continue for years. After many years of speculation, the studio confirmed <em>Black Widow,</em> a film focused on the female character, was slated for May 2020. That was widely expected among fans, as was the scheduling of <em>The Eternals</em> for November next year. Some surprises included Natalie Portman's return to the franchise as a female Thor in the fourth installment called <em>Thor: Love and Thunder</em>. A second <em>Doctor Strange</em> movie is planned, along with the unexpected reboot of <em>Blade</em>, naming Oscar winner Mahershala Ali in the role. Diversity was at the forefront with dating of <em>Shang Chi and the Legends of the Ten Rings</em>, its first Asian superhero movie. It also named new series led by popular characters Loki and Hawkeye, and animated Marvel shows for its new streaming service Disney+. Marvel president Kevin Feige, who made the announcements on Saturday at Comic-Con, had signalled that future films would feature the most diverse cast of superheroes ever. In March, the company released <em>Captain Marvel</em>, played by Brie Larson, the first female superhero in the series to star in her own film. Marvel has also made it clear that African-American actor Anthony Mackie will take over the Captain America role. Fans at the annual conclave in San Diego for comic-book devotees were looking for clues about the future of the series after <em>Endgame</em> concluded a story line that began with the first <em>Iron Man</em> film in 2008.