Overman King Gainer is a Japanese mecha anime series created by Yoshiyuki Tomino, originally released in 2002. The series is set in a post-apocalyptic future where a group of nomads, led by the protagonist Gainer Sanga, pilot giant robots known as Overmen to liberate their city from oppressive forces. With its unique blend of action, adventure, and humor, Overman King Gainer offers an engaging narrative that explores themes of freedom and resistance.