 Although the series is mostly science fiction, it is also tied to the Marvel Universe and occasionally features appearances by established Marvel characters such as Galactus, the Silver Surfer and Adam Warlock, as well as the Marvel UK heroine Dark Angel.The premise of "Cyberspace 3000" is closely linked to another Marvel series, the Guardians of the Galaxy, with the Sol III ship fleeing an invasion by the alien Badoon.This connection is emphasized by references to related characters appearing in some characters dialogue - crewmembers swear ""by Korvac's mother"" and also ""thank Korvac"" for a lucky escape.