Voice:

We are looking for a performance similar to Josh Brolin's portrayal of the character. However, we are welcome to other portrayals as well! He has a deep and booming voice, one that commands respect. 

Josh Brolin: https://youtu.be/flt-8OxfIQQ?t=1m24s

Character Description: 

Thanos, referred to as the Dark Lord by his most loyal underlings and the Mad Titan by the galactic community, is a powerful, Titan warlord who rules over a distant region of space and also commands two massive armies known as the Chitauri and the Outriders. His own main objective is to obtain the Infinity Stones, and his desire to achieve this goal is what led him to forge deals with Loki and Ronan the Accuser in their respective campaigns against Earth and Xandar, promising to aid them in exchange for an Infinity Stone. Both of these new alliances cost Thanos much of his resources, including one of the stones and the loyalty of his two daughters, Gamora and Nebula, and inadvertently resulted in the formation of the two superhero groups: the Avengers and the Guardians of the Galaxy. Fed up with these failures of his servants, Thanos has opted to seek out the six Infinity Stones himself.

Personality: 

Thanos is nothing more than the ultimate personification of sadism, cruelty, megalomania, infinite destruction, death, power and madness as shown by his searching for the Infinity Stones with the apparent goal of controlling all of existence. Despite his malicious and dark nature, Thanos believes that he was born with only one destiny: to save the universe from itself.