Avengers: Endgame cast sing happy birthday to Iron Man

To the film, not to Robert Downey Jr.

Oscar Gonzalez Former staff reporter

Oscar Gonzalez is a Texas native who covered video games, conspiracy theories, misinformation and cryptocurrency.

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Oscar Gonzalez

May 3, 2019 6:35 a.m. PT

iron-man-2 — Robert Downey Jr. as Iron Man.
Francois Duhamel / Disney

Days before the Avengers: Endgame spoiler ban lifts, cast members are already sharing behind-the-scenes videos via social media. Robert Downey Jr.'s latest Instagram video shows the cast and crew singing an apt song, considering the day it was uploaded.

The video posted Thursday has the Avengers: Endgame cast and crew taking a break from filming to sing happy birthday to the film that started the Marvel Cinematic Universe: Iron Man .

View this post on Instagram

#Happy 11th #Birthday to the 1st #IronMan film, released on this day in 2008... #TeamStark #thankyou (🎥 @jimmy_rich )

A post shared by Robert Downey Jr. (@robertdowneyjr) on May 2, 2019 at 8:29pm PDT

"#Happy 11th #Birthday to the 1st #IronMan film, released on this day in 2008... #TeamStark #thankyou," Downey wrote.

Iron Man was released in theaters on May 2, 2008, and kicked off the MCU of 22 movies including Avengers: Endgame. The film was a hit, taking in $585 million at the box office and revitalizing Downey's career.