Jose Delgado grew up in the Metropolis area known as Suicide Slum. As he grew older he became a skilled boxer. He went into teaching and ended up as a high school teacher in Metropolis. He became a mentor to Jerry White (the son of Perry White). When Lex Luthor enlisted youth gangs into organized crime under his control, Jose adopted the identity of Gangbuster to deal with the threat posed to the teenagers in his community.
- Cybernetic Enhancement: When Jose was crippled on duty as the Gangbuster he was forced to accept Lex Luthor's agreement and treatment to return the function of his legs to him. However, Luthor's cybernetic components also allowed him to control Jose's movement if necessary.
- Restricted Mobility: Without the benefit of Lex Luthor's cybernetic enhancement, José Delgado can no longer use his legs.
- 81 Appearances of Jose Delgado (New Earth)
- 3 Images featuring Jose Delgado (New Earth)
- 2 Quotations by or about Jose Delgado (New Earth)
- Character Gallery: Jose Delgado (New Earth)