The Batcomputer first appears when Bruce Wayne is in the Batcave seeing in the security videos of the manor when Commissioner Gordon is alerted of Jack Napier and Lt. Max Eckardt's arrival at Axis Chemicals. Later in the film, it is seen when Batman brings Vicki Vale to the Batcave show the lethal combination of The Joker's health and beauty products. Finally, Bruce uses the computer to observe The Joker's challenge to him while recalling that he killed his parents years ago.