MTV Movie Awards 2015: Robert Downey Jr. Talks Success, Failure and Partying "Way Too Much" in Generation Award Speech

The star's 'Avengers: Age of Ultron' hits theaters May 1.

Robert Downey Jr. got a rousing introduction from some of Earth's mightiest heroes at Sunday's MTV Movie Awards.

Chris Hemsworth, Chris Evans, Scarlett Johansson and Mark Ruffalo praised him as he received the generation award, noting that he had plenty in common with some of his iconic characters. Just like Tony Stark, "he's filthy f—king rich," said Johansson.

Downey came to the stage as (what else?) AC/DC's "Back in Black" blasted.

"The first MTV Movie Awards was in 1992, and I said, 'Wow, that's my generation's version of the Oscars,' " Downey said. "When the first generation award was given in 2005, I thought simply, 'Where's mine?' And I've spent 10 long years patiently awaiting to emerge from a massive, trippy cat head to receive the recognition I've so desired."

Downey made reference to his career and legal troubles, including his arrests for drug possession in the early 2000s.

"Thirty-four years have passed since the birth of MTV. I've grown up. I've struggled. I've failed. I've succeeded. I've partied way too much," Downey said. "Dream big. Work hard. Keep your nose clean. Be of service. And in any way you can, define your generation."

He also debuted a clip for Avengers: Age of Ultron, which hits theaters May 1.