In a recent interview, Robert Downey Jr. shared a heartwarming story about the day Marvel Comics legend Stan Lee filmed his cameo for 2016's Captain America: Civil War.

With nearly any interview involving an actor who has played a part in the Marvel Cinematic Universe, they tend to be asked about their role as the character or even if they can hint at what is to come. This time, Downey was asked whether or not he got the chance to say goodbye to Lee -- who passed away last November -- during an appearance on The Howard Stern Show.

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"One of the last times I saw him, we were shooting Civil War," Downey said. "And in his cameo that day was he's, I think a UPS delivery man, and he had a great line. He goes, 'I have a package for Tony Stank.'

"That was one of the last times I saw him," he continued. "And the crazy thing was -- he said that on the first take, he nailed it -- then they go, 'Alright, resetting, let's do it again.' And after that, he started saying, 'I have a package for Robert, uhh...' And I said, 'Oh my god its wild, even the guy who created the character thinks of me in a moment where he's talking about the character... This is so meta. Stan Lee is forgetting who I am in this moment."

Stan the Man's cameo in Captain America: Civil War is considered to be amongst the writer's most memorable in the MCU and Downey's behind-the-scenes story adds a special element to the fan-favorite appearance.

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Lee, co-creator of many of Marvel's most popular characters -- Iron Man included -- passed away nearly a year ago at the age of 95. His passing was felt across the entire world and, since then, numerous commemorations have been made in his honor.