Hiya, That's a character i made using zbrush and substance painter. The cloak was made using marvelous designer and it doesn’t have bones so that engine can take care for the cloth physics (I think it’s better than manually animate). The animations were made in blender.
Link for sketchfab:
https://sketchfab.com/3d-models/sci-fi-plague-doctor-with-animations-995726f91ec847a58e0755fd2104ca91
Link for artstation:
https://artstation.com/artwork/xJJ3zr
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Reminds me a bit of Scarecrow from Batman Arkham Asilum game if I'm not mistaken.