You cant react to the world in the same way, which a normal human being would.

So for me, [doingFallout] just meant that I could play a human again, at last.

Normal reactions to normal things were allowed.

Henry-Cavill

Credit: Chiabella James/Paramount; Warner Bros.

Then again, hisFalloutcharacter isntreallya mere mortal.

Cavills August Walker is a CIA agent considered a weapon of last resort, he says.

He is a blunt force trauma key in attack.

MISSION: IMPOSSIBLE - FALLOUT

Chiabella James/Paramount

involves killing as a means to an end, while Hunts has always been the opposite.

Ethan believes that whatever Walker is doing, its not helping, Cavill says.

Ethan Hunt is a hero, the guy who makes sure everyone stays alive.

Looking back, Cavill says that despite the trouble his mustache caused, hes delighted by what happened.

And hopefully, he quips, one day I can show my grandkids.

Mission: Impossible Fallouthits theaters July 27.