Warren Girard Ellis (born 16 February 1968) is an English comic book writer, novelist, and screenwriter. He is best known as the co-creator of several original comic series, including Transmetropolitan (1997–2002), Global Frequency (2002–2004), and Red (2003–2004), which was adapted into the feature films Red (2010) and Red 2 (2013). Ellis is the author of the novels Crooked Little Vein (2007) and Gun Machine (2013) and the novella Normal (2016).