Using the illusion projectors and the Stark Industries combat drones designed by William Ginter Riva, Quentin Beck created a realistic illusion of the creature made of fire and molten lava. Gutes Guterman also came up with a story about the Elementals from a parallel universe that got to Earth through a dimensional rift resulting from the Snap.
Beck gave the fabricated story that Molten Man was the most powerful elemental of the four (not including the Elemental Fusion introduced later), and that it grows bigger and stronger by melting metal onto its body. Once it reached a certain size, it could destroy the Earth's core. Beck sent Molten Man to Prague, alerting Nick Fury and Maria Hill of the location prior to the illusions' arrival, giving him and Spider-Man the chance to set up for the coming battle.
Molten Man was unleashed in Prague, and Spider-Man, under the guise of Night Monkey, worked with Mysterio. They began to fight it until Mysterio warned Parker not to let the elemental consume too much metal. Molten Man was able to destroy a ferris wheel and absorb some metal from it, gaining mass. When Parker attempted to save Ned Leeds and Betty Brant who were trapped in a ferris wheel near the battle, he hit one of the invisible drones and knocked its projector off, which fell into the hands of Michelle Jones, who proceeded to steal it. Molten Man soon noticed the ferris wheel's abundance of metal and tried to approach it, only to be knocked back by Mysterio and Spider-Man.
Molten Man fell back into metal scaffolding, which it absorbed. Mysterio announced that the monster was now big enough to attract the Earth's core, beginning to power up. Mysterio then started preparing to give his life to stop the elemental. Despite Peter's pleas, Beck flew right inside Molten Man and blew the elemental up from the inside, destroying it and 'saving' Prague from the threat. In reality, Molten Man had been an illusion, but Beck's faked selflessness was enough for Nick Fury to request he stay to defend the world from other threats, as well as prompting Peter Parker to give Beck the E.D.I.T.H. glasses, giving him and his crew full access to masses of drones.
Molten Man was created as an illusion resembling a creature made of fire and molten lava. With the holographic system designed by Quentin Beck, Molten Man's appearance was utterly realistic, and with Stark Industries Combat Drones, Molten Man was able to cause real damage. Molten Man used attacks based around fire, blowing out blasts of fire from his arms, which was in reality caused by Drones with attached flamethrowers.
- In the comics, Molten Man is Mark Raxton, an Oscorp Industries scientist who worked as the lab assistant of Spencer Smythe. When Raxton tried to steal an experimental new liquid metallic alloy developed by them for the Spider-Slayers to sell it for his own profit, a fight ensued and Raxton spilled the liquid over himself, becoming Molten Man. He was also the son of Doris Raxton and the stepbrother of Liz Allan.
- In Molten Man's introductory scene, a car with the license plate "ASM 28965" is visible. This is a reference to Amazing Spider-Man #28 from 1965, which was the first appearance of Molten Man.
- Molten Man bares more of a resemblance to Fire, a creation of Diablo's and a member of the Elementals of Doom.
- The Marvel Cinematic Universe version of Molten Man replaces Hellfire as a member of the Elementals.
Behind the Scenes
- Production visual effects supervisor Janek Sirrs stated in an interview with IndieWire that during development of Spider-Man: Far From Home, Molten Man was depicted as a gold man sporting a buzz cut and a pair of tighty-whities. They ultimately retained a hint of his buzz cut for "nostalgic reasons."