Tom Hiddleston might be more known for his role as Loki in Marvel films "Avengers" and "Thor," but he's also known for his celebrity impressions.

While on the "The Graham Norton Show" on Friday, Tom Hiddleston took on a huge challenge when he did a Robert De Niro impression right in front of Robert De Niro.

The "I Saw the Light" actor was promoting his upcoming film "Crimson Peak" when Graham Norton asked Tom Hiddleston to do an impression of the "Godfather II" actor.

In fact, Tom Hiddleston even re-enacted the iconic scene from 1995 film "Heat." Not only did he do a really good impression of Robert De Niro, but he also did one of Al Pacino!

"So, we're sitting here, like a couple of regular fellas," said Hiddleston trying to copy Al Pacino's signature raspy voice.

He continued, "I mean, you do what you do, I do what I gotta do. If I'm mad, and I gotta put you away, I won't like it. But if it's between you and some poor bastard whose wife you're gonna turn into a widow, brother, you are going down."

After Robert De Niro starts a laugh as the audience applauses, Tom Hiddleston moves on to his next impression, from the same restaurant scene in the crime film.

Mimicking Robert De Niro this time, Tom Hiddleston says: "What if you do got me boxed in and I gotta put you down? We've been face to face, yeah. But I will not hesitate. Not for a second."

After the whole ordeal, Robert De Niro - who was also on the show to promote his film "The Intern" with Anne Hathaway - admitted that the scene that Tom Hiddleston re-enacted was actually his favorite scene from "Heat."

Tom Hiddleston continued to do more celebrity impressions, including Owen Wilson - his co-star in the 2011 Woody Allen film "Midnight in Paris," as well as Graham Norton - watch it below!