Michael Douglas reveal 'Quantum Realm' of Ant-man will play key role in Marvel films

Veteran actor Michael Douglas has revealed that the Quantum Realm will play an important part in the upcoming Marvel Cinematic Universe (MCU) movies.

Douglas physicist Dr Hank Pym in MCU movies and the concept of Quantum Realm was first teased in "Ant-Man", which featured Paul Rudd as the titular character.

As described by Dr Pym, the Quantum Realm is "a reality where all concepts of time and space become irrelevant as you shrink for all eternity".

"I mean, all of them — I mean, the Quantum Realm, that's the key. That's the key. The Quantum Realm plays an important part in all the next chapters, I think, of the Marvel films," Douglas said during an appearance on "On Air With Ryan Seacrest".

Marvel Studios president Kevin Feige had earlier said that the "Ant-Man" cast will be "very important going forward".