After conquering multiplexes across the world, "The Super Mario Bros. Movie" made its homecoming to Japan on Friday, in a film the video game's creator says has given the iconic character a more human personality.

Supplied photo shows a scene from "The Super Mario Bros. Movie" featuring Mario (L) and Princess Peach (C).(Copyright 2023 Nintendo and Universal Studios)(Kyodo)

"The Mario who was puppet-like in the games has become humanized, and with his varied expressions and flashy movements, he's become a 'person' now," said Shigeru Miyamoto, representative director and fellow at Nintendo Co., in a recent interview with Kyodo News.

The animated film starring Mario, who made his video game debut in 1981 and appears in numerous titles, including the "Super Mario Bros." series, has already been a huge financial success. It is expected to become the first film this year to gross $1 billion at the global box office, according to U.S. media.

Devised in a collaboration between Nintendo and California-based animation studio Illumination, known for its "Minions" film series, the Super Mario movie has seen the 70-year-old Miyamoto get hands-on as one of its producers.

Shigeru Miyamoto, representative director and creative fellow of Nintendo Co., known as the creator of "Super Mario," gives an interview in Kyoto on April 12, 2023. (Kyodo)

"It's got a storyline that's easy to follow, like video games usually do," the game designer at the Kyoto-based computer gaming giant said. "We've made something that parents and kids alike can see at the theater without getting bored."

It was also a moment for Miyamoto to reflect on how his character has developed.

"At first, I drew him as an eight-bit character. Then, with "Super Mario 64," he became 3D and puppet-like. Now with this animation, he's become much more like a real person and this great character," he said.

The film also features scenes from action games that Miyamoto has worked on, including the "Mario Kart" racing series.

Supplied photo shows the Japanese poster for "The Super Mario Bros. Movie." (Copyright 2023 Nintendo and Universal Studios)(Kyodo)  

"Mario is basically an action movie, so we've made something for the screen that allows people to enjoy it with the kind of movements you'd see in a video game," Miyamoto said. "We did a lot of camera work that has never been used in animation before."

There have also been deviations from the original material. Princess Peach, a mainstay who has typically been relegated to a supporting player in need of Mario's rescue, has been reinvented as a spear-wielding fighter.

"For the last 20 years or so, American movies have involved women in the action," Miyamoto said. "I wanted to make Princess Peach a stronger woman," he said, adding that he discussed with Illumination CEO Chris Meledandri about having a version of the character that fights.

The creator, also known to be behind the popular "The Legend of Zelda" series, hinted at the plumber's future film forays, saying, "We've been making Mario video games for 40 years, so there's still a lot of assets."

"Just by constructing something from what we've amassed so far, we can make something new," Miyamoto said.