 This is most likely possible due to the uncertain legal status of Howard's works before 2006 when they became public domain.As of 2019, Conan the Barbarian, as well as Kull the Conqueror and Solomon Kane, have been firmly integrated, thanks to Marvel regaining the publishing rights to the characters.Other licensed works that have been incorporated into the Marvel Universe include Godzilla, the Transformers, the film "" (in the character of Machine Man), Rom the Spaceknight, the Micronauts, and the Shogun Warriors.