Maxine "Max" Gibson, one of Terry's classmates and a bona fide genius, has created a computer program to figure out Batman's secret identity. When Max is targeted by the Jokerz, she rewrites the code to find the Jokerzs' identities, which only puts her in more danger. Michael Rosenbaum and Jill Eikenberry make their first appearances as the voices of Carter Wilson, another one of Terry's classmates, and his mother.