Got to model and texture this guy when I was leading the asset team on Aquaman. It was an interesting one as when we first saw the concept from the client, he has a very unique design particularly on his helmet.
They had a practical suit on-set but the helmet was so big (in order to fit a person's head in it) that it became very comical. We ended up replacing the on-set one with our shrunk CG helmet for more than 95% of the shots. We also did full body replacement on some of those shots. The downstream departments blend that in so well the client couldn't tell the difference in review.
Model was done in Maya. Displacement in zBrush. Textured with Substance Painter as a start then Mari to finish it up.
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Credits:
Model/Texture - myself with the assistance of Jonathan Derby, who did the first pass geo on the leg armors.
Lookdev - Sandro Grassetti
Rigging - Jordan Bartlett