An industry insider, Daniel Richtman, claimed Tobey Maguire's version of 'Spider-Man' might appear in 'Avengers: Doomsday' or its follow-up film 'Avengers: Secret Wars'. While there have been rumours about Maguire being part of the cast, this is the first time a source directly addressed claims. With storylines involving multiple universes, it's possible that heroes from across MCU join forces.