Thanos, sometimes referred to as the Dark Lord, is a fictional character who first appeared in the Marvel comic "Iron Man" #55, which came out in 1973, and then in "Captain Marvel" #25-33. He was born on Saturn's moon Titan, but his planet became threatened from overpopulation, and after suggesting that half of the population should be killed to solve the problem, he was dismissed by them. 

After the devastation of his home, he became a world conqueror who traveled to different planets in the universe in order to destroy half of the population due to his ideology of making things balanced. 

In the Marvel Cinematic Universe, we first encountered this villain in the post-credit scene in "The Avengers" (2012) and then fully in "Guardians of the Galaxy" (2014). In "Avengers: Infinity War," we watched as he traveled around the universe not only killing innocent people, but also decimating planets to find the six infinity stones. 

At the end of the movie, there aren't many Avengers left, but from those who are there, who should you team up with to defeat the evil alien? If you would like to find out who that person is, then you can take this quiz!