"The f—, Fox! You can't play 2 characters in the same universe!! Josh Brolin was in Sicario and I was in Sabrina The Teenage Witch," he tweeted Wednesday.

(For the record, Brolin was not in Sabrina the Teenage Witch and Deadpool is not in the same universe as Avengers.)

Brolin appeared as Thanos in 2014's Guardians of the Galaxy and briefly in 2015's Avengers: Age of Ultron. He is set to be the big bad in Avengers: Infinity War, due out in 2018, which is the same year Deadpool 2 is expected (though no date has been set for the Fox sequel). Reynolds himself has been involved in two superhero universes, also playing the hero in the ill-fated 2011 DC movie Green Lantern.

As for worries about Cable looking too much like Thanos, there's good news: One of them is purple, and the other has weird cyborg parts.