There is one particular villain in Marvel Comics canon who is strong enough to take on both Thor and Hulk with ease, and the MCU totally wasted them.

Thousands of years ago, a race of beings known as Dark Elves ... entered her. Malekith, upon sensing that the time to strike is now, seeks out the Aether. He attacks Asgard and Thor's mother ...

MCU fans know all about the Malekith from the somewhat disappointing Thor The Dark World. Yet, many forget that in the comics, Malekith was actually one of Thor’s most deadly foes. A dark elf ...

and part of the Marvel Cinematic Universe (MCU) film series. The series centers on Thor, the crown prince of Asgard.