Klingons belong to Star Trek and Gene Roddenberry etc etc.
Makeup Gelatin facial prosthetic mask.
Model: Jesse I
Fun Fact! This piece took 2 weeks to make, and underwent 3 complete rehauls to get a true Klingon forehead look with nice tight and unique ridges.
The piece was poured in gelatin and applied, then painted and crepe hair eyebrows applied to the brow. The piece extends from the hairline over the brows, and down onto the cheeks for noble cheekbones. This took 1 hour to apply and paint.