Chris Hemsworth Says the 'Avengers: Endgame' Premiere Is 'Bittersweet' (Exclusive)

The actor was tight-lipped about spoilers, but did admit that the cast "left it all on the field with this one."

Chris Hemsworth plays one of Earth's Mightiest Heroes, but even he is getting emotional about the Avengers' final mission together.

The actor and his wife, Elsa Pataky, stepped out in style for the Avengers: Endgame premiere in Los Angeles on Monday, looking every bit the dapper duo as they celebrated the massively anticipated closer to the MCU's first three phases of films.

Hemsworth, who marks his eighth Marvel movie appearance as the Norse god Thor in Endgame, sported a stylish navy and black paisley print suit and dress shirt, with a black tie and perfectly-coiffed hair and stubble, while Pataky looked stunning and ready for summer in a white gown with a halter top.

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Of course, the big buzz of the evening was about the top-secret details of Endgame, which have been carefully kept under wraps by the Marvel cast and creatives. In fact, Hemsworth hadn't even seen the film yet when he stopped to talk with ET on the carpet.

"I mean, I've heard nothing but incredible things," he assured, noting that there was "a different buzz about this than I have [had] in previous films," and admitting that he felt "nervous" about watching the movie for the first time.

"It's always a nerve-wracking experience, but, I don't know, this was-- we literally left it all on the field with this one, and it was a combination of about 22 films, 10 years of work, and so I think we all have a sense of pride," he added. "It's a bittersweet quality to it, because this is the last time this gathering of this group of people is gonna be here together."

No matter what his character's fate might be in the Endgame, Marvel fans have loved Hemsworth's portrayal of Thor since his on-screen debut in his 2011 origin story. However, it may be another story at home. The actor admitted that he isn't quite the favorite Avenger among his and Pataky's three kids: daughter India, 6, and twin sons Sasha and Tristan, 5. 

"I try and convince them to [favor Thor], you know, sort of give them special treats, but no they're not into it," he laughed. "I think they like Captain America. They like Wonder Woman and yeah, the Hulk, but then they met Mark Ruffalo and they were like where's the Hulk? I was like, well... Kids, you know? What do you do?"

Avengers: Endgame hits theaters on Friday.