Calle Granström is a VFX artist from Sweden who has worked on games (or trailers for games) like Battlefield 4, God of War: Ascension, Unravel and Battlerite.
You can see more of Granström's work at his personal site.
Here's some of Granström's concept art:
And here are some of the trailers/cinematics he's worked on as part of a larger team:
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