Cal Brunker, also known as Callan Brunker, is a Canadian filmmaker, screenwriter and storyboard artist. He is best known for writing and directing the computer-animated comedy films Escape from Planet Earth (2013) and The Nut Job 2: Nutty by Nature (2017). Besides these, Brunker has also served as a screenwriter on films like The Son of Bigfoot (2017) and Arctic Justice (2018). Notable film credits as a storyboard writer include Despicable Me (2010), Minions (2015) and The Secret Life of Pets (2016).