Mask of the Phantasm explores the tragedy and isolation of Bruce Wayne, but Batman and Mr. Freeze: SubZero, its 1998 direct-to-video sequel, explores grief and loss differently and pushes Mr. Freeze and Barbara Gordon to the forefront of the story. This is still a Batman film, but the Dark Knight takes a backseat to the drama surrounding Mr. Freeze’s cryogenically frozen wife, Nora, and the steps he takes to ensure her survival. While not as emotionally resonant as the previous film, Subzero is a damn fine sequel to Mask of the Phantasm and a complimentary companion to the animated series that inspired the film.