Guest Stars Sam Littlefield as Mouse Ava Sleeth as Young Beth John Emmet Tracy as August Cartwright Nicholas Holmes as Young Johnny Co Starring Rachel Maddow voices Vesper Fairchild Allison Riley as Dana Dewitt Nathan Witte as Agent Miguel Robles Cameron McDonald as Commissioner Forbes Ryan Rosery as Bryan Akins Gage Marsh as Steven Forbes Uncredited Rachel Skarsten as Beth Kane