The actor in the M&M’s Superbowl commercial “Human” from 2018 is:
Danny’s IMDB Page
Danny DeVito is a well-known actor, best known for his roles in movies such as Matilda, Batman and The War of the Roses. Perhaps his most well-known role, however, has been as “Frank Reynolds” in the television show It’s Always Sunny in Philadelphia.
The voice of “Red” before the transformation is provided by Billy West, as has been the case for several years. Billy is best known for voicing “Phillip J. Fry” (as well as many other characters) on the television series Futurama.