Hot Hollywood actor Robert Downey Jr. is acting all mysterious about the upcoming Avengers: Age of Ultron film by describing it as both "a beginning and an ending," according to Empire.

"In the script there's a lot of references to that - it's the ending of the beginning, the beginning of the ending - and honestly, what I was marvelling at in being there, it's just wild. It's just incredible what's occurred and how part of the furniture of popular entertainment it's become," he teased.

Downey said that Avengers has managed to become the gold standard in that particular genre in filmmaking, and it is because of the "talented folks" behind production. He also talked about Tony Stark's role in the creation of the destructive Ultron, which he and the gang later set out to destroy.

"Interestingly enough, it's the ironic flip side. The thing I'm trying to create was to stop all this. It's a 'damned if you do' type thing. Look, in some ways it's just a device. Every character has to have something to do that makes sense to set up. What I appreciated was that it was a new flip for Tony without seeming out of character," he said.

The actor said that he loves the idea that Tony's impulse to do good backfires on him. He said that his good deed managed to "find its way back and become something else." And this is quite different from how his character thought during Iron Man 3, when he said, "You know what, I don't even need the suit. I'm just a badass."

Downey even said that his character, the arrogant and cocky billionaire is slowly maturing and has even become "a benefactor of something vastly different than his father ever could have imagined."

"Tony has always been interested in how he can make more space for himself under the guise of having a moral psychology and a spiritual awakening of sorts in the cave, but now it's about being a worker amongst workers and trying to find his place and go back to the simplicity of where it all started," explained Downey.

It all started, of course, when he fell in love with the girl who used to work for him - Pepper Potts. Downey said that Tony is actually the only one among the Avengers who is in a committed relationship, and he even considers this fact "cool."