10 Actors You Didn't Know Were In Huge Movies

The final entry on this list is on a whole other level from the previous nine, as the actor in question was meant to be hidden.

Aside from the fact that he has collaborated with the director multiple times, there was no way anyone could've known that Joseph Gordon-Levitt appeared in both Knives Out and Glass Onion. They're interesting cameos to say the least, and yet this is exactly how Rian Johnson decided to utilise the actor's talents.

In Knives Out, Gordon-Levitt plays Detective Hardrock in the TV show Marta's sister watches towards the beginning of the movie. It's almost impossible to nail down that this is Joseph Gordon-Levitt, but if you really listen, there is the slightest of chances you can pick this up. In Glass Onion however, you've got no chance, as the actor voiced Miles Bron's obnoxious clock that 'bonged' on every hour throughout his private island.

Rian Johnson already has his sights set on the third Benoit Blanc mystery, so fans should definitely keep their ears out for Gordon-Levitt when the time comes.