Defendor (2009)

Defendor is a 2009 action-comedy-drama movie about Arthur Poppington, a man with a mental disability who takes on the persona of Defendor, a vigilante crime-fighter. Despite his lack of superpowers, Defendor fights against organized crime, gun-running, and pimps in the city. Through his delusions, he believes he has a secret identity and takes on criminals using unconventional methods. As the story unfolds, Defendor seeks revenge and finds himself in dangerous and comedic situations.