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Marvel's What If…? Season 3 to Assemble Avengers' Robot Mecha, Voltron-Style
posted on by Egan Loo

The footage showed a 2D limited-animation sequence, apparently inspired by 1970s and 1980s English-dubbed television anime, with the title Go-Avenger: Heroes of the Gamma War — an apparent reference to go or the Japanese word for five, Voltron). The sequence shows how Iron Man (Tony Stark) created the team-up.
The footage then shifts into modern-style 3D animation to introduce the pilots of the five robotic mecha: Captain America (Sam Wilson), Black Widow (with Alexei "Red Guardian" Shostakov riding tandem in her cockpit), Xu Shang-Chi, Monica Rambeau (Captain Marvel/Photon in the comics), and Moon Knight (Marc Spector). As the center robotic mecha's pilot, Captain America commands the team to combine by uttering "Avengers, assemble!"
The footage finally showed the combined Avengers robotic mecha fighting a horde of Mega-Hulk monsters.
The offical X (formerly Twitter ) for the series had posted a season 3 screenshot of two of the robotic mecha (before they combined with the others) on January 22:

Marvel's earlier Japanese-inspired collaborations include the 1977-1979 Godzilla, King of the Monsters comic series which introduced the Red Ronin robotic mecha, Marvel Disk Wars: The Avengers anime series.
More recent collaborations include the 2017 Marvel Comics: A Manga Tribute collection (2023).
Update: More Japanese-inspired Marvel projects added. Thanks, mdo7 and Silver Kirin.
Source: "Marvel Animation Sneak Peek" at D23
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