Sewer Claus by Dan Shrader

Gary Pepper was once a drummer for a cool rock band. Now he’s a chemically-pickled janitor Santa who takes life advice from Gibby Haynes of The Butthole Surfers only when he's taken some gulps of industrial cleaners. After stumbling into a fake Christmas charity that’s REALLY trafficking children, Gary gets beaten, dumped in the sewer, and left for dead. He knew too much. But something in those chemicals mixed with the sewer sludge and severe head trauma only made Gary more... dangerous.  Sewer Claus is coming to town—and he’s not bringing toys. "It’s like MANDY, TAXI DRIVER, and TOXIC AVENGER... but for Christmas, bro!!" -SOME READER