It started with the top image. An artist called Blue posted a drawing of a Black Widow and Hawkeye cover with the poses swapped. Blue then issued a challenge to other artists: replace the female characters in other comics with Hawkeye. These are just a few examples of what happened next.

Ahh yes, the good ol' times.

Whisk Yourself Away Into the Faniverse!

(The Avengers)

We only got to see him for a brief second, but a lot of work went into making Thanos believable on the big screen. Based on this concept art, do you think he'll make a good villain in Avengers 2?