When does Happy! return?

The series premiered on Syfy on December 6, 2017, receiving mostly positive reviews. It is based on the four-part graphic novel of the same name created by Grant Morrison and artist Darick Robertson. The series was cancelled by Syfy after two seasons.
Disgraced police detective Nick Sax lives as a social outcast, filling his days with light drinking and substance abuse, moonlighting as a hitman. After having a massive cardiac arrest, Nick comes into contact with a small, blue, winged unicorn named Happy that only he can see. Happy explains he is the imaginary friend of a little girl named Hailey, who has been kidnapped by a deranged man dressed as Santa Claus.