In addition to wearing the special suit, new behind-the-scenes videos from iO9 and IGN shows the actor sometimes wore a contraption that showed a cutout of Thanos’ head and shoulders above his own. This is so the actors have a reference point for where they should look while performing.

It looks ridiculously hilarious.

AdvertisementSometimes this is done with a tennis ball, but “Infinity War” went all out with a likeness of Thanos. Marvel

Let’s take a closer look at that. 

This is from a beginning scene in “Avengers: Infinity War” where Thanos meets Thor and Loki. Marvel

Brolin also wore the cutout during the big fight scene near the movie’s end on Titan, according to a behind-the-scenes video from IGN.

Marvel

Here’s a better look at Brolin:

Josh Brolin playing Thanos in a motion-capture getup while filming “Avengers: Infinity War.” Marvel

You have to give Chris Hemsworth, Tom Hiddleston, Robert Downey Jr., and anyone else acting across Brolin some credit for being able to accomplish anything serious during these scenes.

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A similar fixture was used filming the first “Guardians of the Galaxy” for scenes with Groot.

That’s not Vin Diesel in the blue suit. Here’s how Groot looked in some scenes during 2014’s “Guardians of the Galaxy.” Marvel

Don’t feel too bad for Brolin. He wasn’t wearing that Thanos cutout the entire time he was filming.

He just had a few different colorful suits with cameras.

This purple one’s a favorite.

AdvertisementMarvel via iO9

You can see the full clip of Brolin performing in his motion-capture suit over at io9 here. Watch the behind-the-scenes video from IGN below:

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