Wait until you meet his dog, a rescued pit bull named Oscar.
"He's super laid-back," McKenzie tells PEOPLE. "He's a little too California. The cancer he got was skin cancer, from laying out in the sun. He needs to wear some more SPF, I guess."
After undergoing chemotherapy, Oscar is now back in good health and has been visiting the Southland set with McKenzie.
"He's a Hollywood dog, man. Going to set, living in the Hills," McKenzie says. "He's living the dream, sleeping all day. I wish I had his life."
Click to hear more from Ben McKenzie on his laid-back pooch!