Rent Karneval: Series (2013)

The circus is a super-powered security force of entertainers who keep villains off the streets by serving up justice with a side of razzle-dazzle. Despite their best efforts, a sinister organization named Kafka is gaining power throughout the world using grotesque monsters to carry out their plots. When Circus saves a mysterious boy from Kafka's grasp, the kid gets swept up in the crime-fighting spectacle - but why was Kafka after him in the first place? Contains episodes 1-13.