Headey will play “super smart” US Secret Agent Jeopardy Mouse, while Oliver has been confirmed as mad scientist wolf Dr Augustus P Crumhorn III.
The pair will join stars Alexander Armstrong, who voices Danger Mouse, Kevin Eldon as DM’s trusty sidekick Penfold, Stephen Fry as the voice of Colonel K and Armstrong’s Pointless co-presenter, Richard Osman who plays Professor Strontium P Jellyfishowitz, leader of all scientists on earth.