"Happy!" is based on New York Times best-selling author Grant Morrison and Darick Robertson’s graphic novel of the same name. The series follows Nick Sax (Christopher Meloni, "Law & Order: SVU") -- an intoxicated, corrupt ex-cop turned hit man -- who is adrift in a world of casual murder, soulless sex and betrayal. After a hit gone wrong, his inebriated life is forever changed by a tiny, relentlessly positive, imaginary blue winged horse named "Happy" (Patton Oswalt). Grant Morrison ("Batman," "The Invisibles"), Brian Taylor ("Crank," "Gamer") are exectutive producers.