Baseball Bat Man and his sister, Hammer Girl, are a fearsome duo who have come back from the dead and now work as murderers and vigilantes in Jakarta, Indonesia, and also other places. They maintain friendly relationships with fellow vigilantes and fighters Rama and Prakoso. Bat Man is a skilled martial artist and possesses extreme proficiency with baseball bats, having used them to kill people in the past. He also has remarkable accuracy and range in throwing baseball balls and using baseball in an deadly way, making him a formidable opponent.