Jack Hammer is a character from Rescue Heroes. He is a construction worker hailing from Texas, which is revealed in the episode "Sibling Blow out". He was originally a contractor hired to build the rescue heroes base of operations, but had saved a fellow construction worker in a crane accident. Because of this, he was given the opportunity to try out for the rescue heroes. Jack also has a little sister Jill Hammer who was seen in the episodes "Sibling Blow Out" and "The Newest Hero". She lives in Texas along with Jack. She is really great as he is too.