They were first spotted filming scenes for the new superhero movie Avengers 4 on Wednesday.
And Chris Hemsworth, 34, and Tom Hiddleston, 36, were back at it on Thursday in downtown Atlanta.
Chris, who plays the hammer-wielding Thor, and Tom, who plays Thor's brother Loki, looked like they were having a ball on set.
Hard at work: Chris Hemsworth, 34, and Tom Hiddleston, 36, were again seen filming Avengers 4 on Thursday in downtown Atlanta.
The untitled Avengers film will be released on May 3, 2019. Chris can currently be seen in Thor: Ragnarok.
This sighting comes just days after Downey Jr confirmed he was a part of Avengers 4 with an Instagram photo; he will be reprising his role as Tony Stark/Iron Man.
The snap shows shows Stark's much smaller and more padded director's chair in front of three others labelled Scott Lang, Natasha Romanoff and Steve Rogers.
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