Marvel Studios head Kevin Feige has offered his assurances that Josh Brolin playing two comic book movie roles is not a problem for him.
And I think Thanos and Cable are two very different characters.”
For those not in the know: the X-Men movie franchise is owned by 20th Century Fox, so the characters from that series – including both Deadpool and Cable – cannot currently appear in the MCU movies.
The news that Josh Brolin is playing Cable in the upcoming Deadpool 2 came as a surprise to most, not least of all because Brolin is already portraying Thanos in the Marcel Cinematic Universe films (including, next year’s Avengers: Infinity War).