When a variant Frank Castle goes back in time with plans to murder Thanos as an infant, he instead kidnaps the child and tries to raise him as a good man. The Cosmic Ghost Rider miniseries introduced a Punisher Thanos.

Josh Brolin could play King Thanos in Secret Wars - a variant of the Mad Titan who murders most of Marvel’s heroes and survives to a dark future where he sits upon a throne and keeps an elderly Hulk as his pet. The comics have featured countless variants of Thanos from across the Multiverse from the even more terrifying to the outright bizarre. Still, with Josh Brolin confirmed for Secret Wars, there’s no end of the possible versions of Thanos he could play. Of course, Avengers: Secret Wars is bound to not be a carbon copy of the event upon which its based, just as films like Avengers: Age of Ultron and Captain America: Civil War took great liberties with the source material. Thanos and God Doom in Secret Wars #4, Marvel Comics 2015 They’re not only more than happy to destroy the realities involved in the Incursions for the sake of their own, but they often enjoy slaughtering the doomed worlds’ populace just for fun beforehand. In fact, before Doom remakes Marvel’s Multiverse as a single planet over which he rules, Thanos and his Cabal work hard to stop the coming catastrophe from happening, but with fewer moral qualms than their Illuminati counterparts. In the 2015-16 comic book inspiring the film, Thanos and the group of bad guys following him–The Cabal, a supervillain reflection of the Illuminati–do everything they can to oppose the villain God Doom (aka, Doctor Doom, but a whole lot more powerful). One intriguing possibility is that when Josh Brolin appears in Secret Wars, it won’t be as a villain or, at least, it won’t be as an antagonist.

Cosmic ghost rider