The series' principal reference is to the 1964 animated science fiction adventure television series Jonny Quest, as it is the basis for many of the main characters. Dr. Venture is modeled after what a child such as Jonny Quest might have grown up to be like after having lived through a childhood filled with bizarre, life-threatening events. Brock is modeled on Race Bannon. The Venture boys are based on the Hardy Boys and take the places of Jonny and Hadji. In the episode "Ice Station – Impossible!", Brock mentions that he had served with Race Bannon on several occasions. He regards his fellow agent with respect calling him "one of the best". One newspaper critic remarked, "If filmmakers Woody Allen and Sam Peckinpah had collaborated on Jonny Quest, it would have come out a lot like this. " In season 2, Jonny Quest was introduced into the show as Action Jonny, a homeless drug addict who deeply resents his father. As of season 4, Jonny is somewhat stable, and in a support group for former boy adventurers, along with Dr. Venture, the second Wonder Boy, RoBoy, and The Hale Brothers–the final three being parodies of Robin, Astro Boy, and The Hardy Boys respectively.