Walter Hill is an American film director, screenwriter, and producer. He is widely known for his action films including, The Warriors , Hard Times , The Driver , Southern Comfort , 48 Hrs. and its sequel Another 48 Hrs. , Red Heat , Last Man Standing , Undisputed , and Bullet to the Head , as well as writing the Steve McQueen crime drama The Getaway .  Jef is a French comics artist and designer who has illustrated several titles including Body and Soul , Hunt and Jim Morrison: Poet of Chaos . Apart from his hit series The Killer, MATZ has been involved with games such as "Splinter Cell," "Ghost Recon," "Rainbow Six," "Prince of Persia," and the "Assassin's Creed" series.