She can be replaced, we can find someone who can voice Vexus, John DiMaggio voices the Joker in 'Batman: Under the Red Hood' replacing Mark Hamill as he voiced the Joker for the last time on 'Batman: Arkham City', AJ LoCascio voices Marty McFly for 'Back to the Future: The Game' and Blake Clark voices Slinky in 'Toy Story 3' replacing the Late Jim Varney (Rest in Peace)...