Robert Downey Jr. stays in character as Doctor Doom, refuses fans' fist.

Robert Downey Jr. is one of the most humble and down-to-earth personalities in showbiz. Despite his volatile and disastrous career track, the actor has managed to build a legacy that others can only dream of. Despite his failures and setbacks, Downey bounced back to give us one of the best portrayals of a superhero and is now set to play another iconic character in the Marvel Cinematic Universe: Doctor Doom.

Recently, one of his interactions with a fan went viral on the internet, where he refused to fist bump a fan. And netizens have praised the actor for being in character despite the slightly awkward moment.

It's no secret that Robert Downey Jr. had originally auditioned for the role of Doctor Doom at the time of the first Fantastic Four adaptation. Now, after giving fans one of the greatest superhero portrayals of all time as Iron Man in the MCU, he has been cast as Doctor Doom. Despite being a shocking career decision, fans have largely appreciated the actor taking on the mantle of one of the most iconic villains in the Marvel-verse.