Janet Jackson as Denise Gaines. Gaines replaces Sherman's girlfriend in the first film, Carla Purty, because the actress who played her, Jada Pinkett, left due to marrying Will Smith, her pregnancy, and later her signing on to the sequels to The Matrix. But Purty is mentioned to be just a friend.
Earl Boen and Nikki Cox both starred in The Terminator movies starring Arnold Schwarzenegger. Earl Boen played Dr. Silberman in The Terminator (1984), Terminator 2 Judgment Day (1991) and one more time in Terminator 3: Rise of the Machines (2003) and Nikki Cox had a small part as a red haired gun in Terminator 2 Judgment Day (1991).