A versatile artist, Christopher Markus is an American writer, producer, and actor. Having started his career in the entertainment industry as a writer, Markus made his debut with the popular children`s fantasy film The Chronicles of Narnia: The Lion, the Witch and the Wardrobe in 2005. Over the year, Markus has written for more than 15 films and series. Some of his other notable credits as a writer includes Captain America: The First Avenger (2011), Thor: The Dark World (2013), Lego Marvel`s Avengers (2016), Captain America: Civil War (2016), Avengers: Infinity War (2018) and Avengers: Endgame (2019).