
Why doesn’t the Iron Spider suit in Spider-Man: No Way Home have an arc reactor? Unlike older Iron Man suits, this nanotech armor doesn’t need a central power source. Built with advanced technology similar to Tony Stark’s Mark 50 and 85, the suit likely uses nano-arc reactors distributed throughout. Tony even told Pepper that the arc reactor was just a housing unit for nanobots. And when it comes to Peter Parker, the Iron Spider suit was designed with agility and web combat in mind—making a visible reactor unnecessary.