Happy gaat over de corrupte ex agent Nick Sax (Christopher Meloni, Law & Order: SVU) die nu een huurmoordenaar is geworden. Nadat een klus mislukt wordt hij opeens lastig gevallen door een fictief blauw paard die de naam Happy (Patton Oswalt) heeft. De website Collider had een interview met beide heren en daar van kan je hier onder alvast een stukje lezen

Collider: This series is crazy and unlike anything I've ever seen on TV before. When you read it, did you realized just what you were getting into?

PATTON OSWALT: I was a fan of the graphic novel. I'm a big Grant Morrison fan, so I remember how fucked up the graphic novel is. When I read the script, I went, "Oh, they're going all the way with this. This is just the pilot. If this is what they're doing in the pilot, then I'm very excited." When I read the physical descriptions for what Chris was going to get put through, I was like, "I hope Chris knows what he signed on for. I hope he's watched the Crank films and knows what's about to happen."

CHRISTOPHER MELONI: I did. I understood that it came from a graphic novel, but I wasn't quite sure of the world and the tone. I know they were saying that Syfy wants to rebrand and they really want to go for it, but if I had a dime for every time I heard that. The way that the business is and the way television has evolved, you absolutely must put up or shut up, and I think they did. Actually, I had to have two phone calls with Brian Taylor, the guy who adapted it and directed [the pilot], who also directed Crank. I said, "What is the tone? What is this world?" And he said, "I have no idea!" I said, "I love your honesty. I'm in!" I'm just glad he wasn't trying to sell me some horseshit.