Aoijira

Aoijira was one of the biggest Kaiju stars with a long running film franchise and everything but then people got bored of old fashioned film making and favors CGI. Because of this the poor blue monster was out of a job, until he got to the Okinawa airport. There a real sized kaiju attacked and since he's been making kaiju films for 60 years, Aoijira decided to try to stop the beast. He succeed and a lot of people saw the battle including the Tokyo police department. You see they've been planning to create a Kaiju division and they think our hero is just the monster for the job. They pair our protagonist with a young upcoming cop and a thus a Kaiju P.D is born.