Special Guest Stars Tom Cavanagh as Dr. Harrison Wells Jessica Parker Kennedy as Nora West-Allen Guest Stars Carmen Moore as Kristen Kramer Michelle Harrison as Speed Force Nora John Wesley Shipp as Jay Garrick / The Flash (Earth-3) Karan Oberoi as Godspeed Michelle Harrison as Joan Williams Jordan Fisher as Bart Allen / Impulse Co Starring Rick D. Wasserman voices Prisoner Godspeed