Christopher Lee Yost (born on February 21, 1973) is a writer who is responsible for his own Marvel animated universe comprised of Wolverine and the X-Men (2009), Hulk Vs., The Avengers: Earth's Mightiest Heroes!, and Thor: Tales of Asgard. He and Craig Kyle are also responsible for the creation of X-23, a character whose appearance in X-Men: Evolution proved so popular she was adapted into the Marvel Comics and other media.
He has written for X-Men: Evolution, Fantastic Four: World's Greatest Heroes, Next Avengers: Heroes of Tomorrow, and Hulk Vs. He is also the story editor on Fantastic Four: World's Greatest Heroes, the first season of Iron Man: Armored Adventures, and The Avengers: Earth's Mightiest Heroes. Comics-wise, he's had runs on Scarlet Spider (specifically Kaine's tenure), X-Force, and Avenging Spider-Man. He was also a screenwriter on Thor: The Dark World and Thor: Ragnarok.