"I have absolutely no idea," Weaving said when asked if he'd be returning for Captain America: Civil War or possibly in another Marvel film. "I haven't talked to anyone about it, so, yeah, we'll just have to wait and see. No idea at all."

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Weaving has previously downplayed his desire to return, though Marvel Studios head Kevin Feige has said the Red Skull could potentially pop up down the line. Fans are speculating the Captain America: Civil War mystery villain to be played by Daniel Bruhe could be the Red Skull in some shape or form.

For now, fans can see Weaving in The Mule on VOD and in theaters. The film, based on a true story and set in 1983, also stars Angus Sampson as Ray, an Australian man suspected of smuggling drugs. When Ray is caught, Weaving's character is one of the detectives who must keep him company until he (ahem) relieves himself, thus revealing the drugs he supposedly swallowed. Ray doesn't want that to happen, so he attempts to run out the clock by refraining from using the restroom until the cops will be forced to let him go.

Find our full chat with the Weaving below, where he talks about the parallels between his The Mule character (Croft) and The Matrix's Agent Smith and why he chose to take on the role.

What struck you about The Mule?

I really loved the script, and I laughed a lot. I thought it was a very smart, intelligent piece. It's a terrific character. It presents him one way, but like all the characters in the film, he's not black and white. They are all pretty gray. They are all harboring secrets and are a little compromised.

What preparation did you do for this role?

I jumped back into 1983 [when the film is set]. There were a number of little things I watched. There was a great TV series at the time in Australia called The Scales of Justice, which was a look at — for want of a better word — the whole justice industry, from a young cop graduating and becoming a policeman, right up until major corruption in the high court. It was made in 1983, and even though it wasn't a documentary, it sort of took me back to the creative world of the day.

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What preparation did you do for this role?

There was a cop both [costar] Ewen (Leslie) and I met up with, and we had a couple of hours to talk about various legalities and various interview transgressions and things you could or couldn't do with a witness and holding them for a certain amount of time.

The Matrix has one of the all-time great interrogation scenes. Did that work affect your work here?

I didn't draw a parallel with Smith, but it's true. They both want something from somebody else. But I guess that's true of a lot of relationships, really. If you look at any relationship on film, there's often one dominant and one slightly recessive character, and then perhaps the tables turn. But we all want something from other people from time to time.

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What do you like best about playing Croft?

I think the interesting thing about this film is that Croft presents as an old school cop with a pretty questionable interview technique, and he's obviously a sexist pig, but you enjoy watching him, and I certainly enjoyed playing him. He's very prepared to bend the rules, but ultimately he ends up at least having a line he doesn't cross, unlike the majority of the other characters.

Is there any chance we'll see you as the Red Skull in the next Captain America or in another future film?

I have absolutely no idea. I haven't talked to anyone about it, so, yeah, we'll just have to wait and see. No idea at all.

Email: Aaron.Couch@THR.com

Twitter: @AaronCouch