maserious
Maserious is a portmanteau of the words mad and serious.
When you are beyond mad and beyond serious.
A look you give when you are really mad and serious and the same time.

Gamer Joe and his squad was getting close to the tournament win for big money, then the best played got eliminated. In his anger, Joe broke his cameras. We couldn't see his face, but he sound extremely maserious.

She was so furious she looked maserious!
She was so furious she looked maserious!