Cast
Casey Kasem. Casey Kasem was 80 in Scooby-Doo: Mystery in Motion as 'Shaggy Rogers / Sheriff (voice) (archive footage)'.
Birthday: Wed, Apr 27 1932 –
Died: Sun, Jun 15 2014
Frank Welker. Frank Welker was 66 in Scooby-Doo: Mystery in Motion as 'Fred Jones / Scooby-Doo (voice) (archive footage)'.
Birthday: Tue, Mar 12 1946
Nicole Jaffe. Nicole Jaffe was 71 in Scooby-Doo: Mystery in Motion as 'Velma Dinkley (voice) (archive footage)'.
Birthday: Fri, May 23 1941
Arlene Golonka. Arlene Golonka was 76 in Scooby-Doo: Mystery in Motion as 'Debbie (voice) (archive footage)'.
Birthday: Thu, Jan 23 1936 –
Died: Mon, May 31 2021
Don Messick. Don Messick would have been no older than 71 in Scooby-Doo: Mystery in Motion as 'Scooby-Doo / Ghost (voice) (archive footage)'.
Birthday: Tue, Sep 07 1926 –
Died: Fri, Oct 24 1997
John Stephenson. John Stephenson was 88 in Scooby-Doo: Mystery in Motion as 'Ghost (voice) (archive footage)'.
Birthday: Thu, Aug 09 1923 –
Died: Fri, May 15 2015
Grey DeLisle. Grey DeLisle was 38 in Scooby-Doo: Mystery in Motion as 'Daphne Blake / Dempsey (voice) (archive footage)'.
Birthday: Fri, Aug 24 1973
Jeff Bennett. Jeff Bennett was 49 in Scooby-Doo: Mystery in Motion as '(voice)'.
Birthday: Tue, Oct 02 1962
Heather North. Heather North was 61 in Scooby-Doo: Mystery in Motion as 'Daphne Blake (voice) (archive footage)'.
Birthday: Wed, Dec 13 1950 –
Died: Wed, Nov 29 2017
Dee Bradley Baker. Dee Bradley Baker was 49 in Scooby-Doo: Mystery in Motion as 'Keeper (voice) (archive footage)'.
Birthday: Fri, Aug 31 1962
Mindy Cohn. Mindy Cohn was 46 in Scooby-Doo: Mystery in Motion as 'Velma Dinkley (voice) (archive footage)'.
Birthday: Fri, May 20 1966
Henry Corden. Henry Corden would have been no older than 85 in Scooby-Doo: Mystery in Motion as 'Ghost (voice) (archive footage)'.
Birthday: Tue, Jan 06 1920 –
Died: Thu, May 19 2005
Michael Bell. Michael Bell was 73 in Scooby-Doo: Mystery in Motion as 'Mark (voice) (archive footage)'.
Birthday: Sat, Jul 30 1938
Mel Blanc. Mel Blanc would have been no older than 81 in Scooby-Doo: Mystery in Motion as 'Speed Buggy (voice) (archive footage)'.
Birthday: Sat, May 30 1908 –
Died: Mon, Jul 10 1989
Pat Fraley. Pat Fraley was 63 in Scooby-Doo: Mystery in Motion as 'Uncle Carl (voice) (archive footage)'.
Birthday: Fri, Feb 18 1949
Casey Kasem. Casey Kasem was 80 in Scooby-Doo: Mystery in Motion as 'Shaggy Rogers / Sheriff (voice) (archive footage)'.
Frank Welker. Frank Welker was 66 in Scooby-Doo: Mystery in Motion as 'Fred Jones / Scooby-Doo (voice) (archive footage)'.
Nicole Jaffe. Nicole Jaffe was 71 in Scooby-Doo: Mystery in Motion as 'Velma Dinkley (voice) (archive footage)'.
Arlene Golonka. Arlene Golonka was 76 in Scooby-Doo: Mystery in Motion as 'Debbie (voice) (archive footage)'.
Don Messick. Don Messick would have been no older than 71 in Scooby-Doo: Mystery in Motion as 'Scooby-Doo / Ghost (voice) (archive footage)'.
John Stephenson. John Stephenson was 88 in Scooby-Doo: Mystery in Motion as 'Ghost (voice) (archive footage)'.
Grey DeLisle. Grey DeLisle was 38 in Scooby-Doo: Mystery in Motion as 'Daphne Blake / Dempsey (voice) (archive footage)'.
Jeff Bennett. Jeff Bennett was 49 in Scooby-Doo: Mystery in Motion as '(voice)'.
Heather North. Heather North was 61 in Scooby-Doo: Mystery in Motion as 'Daphne Blake (voice) (archive footage)'.
Dee Bradley Baker. Dee Bradley Baker was 49 in Scooby-Doo: Mystery in Motion as 'Keeper (voice) (archive footage)'.
Mindy Cohn. Mindy Cohn was 46 in Scooby-Doo: Mystery in Motion as 'Velma Dinkley (voice) (archive footage)'.
Henry Corden. Henry Corden would have been no older than 85 in Scooby-Doo: Mystery in Motion as 'Ghost (voice) (archive footage)'.
Michael Bell. Michael Bell was 73 in Scooby-Doo: Mystery in Motion as 'Mark (voice) (archive footage)'.
Mel Blanc. Mel Blanc would have been no older than 81 in Scooby-Doo: Mystery in Motion as 'Speed Buggy (voice) (archive footage)'.
Pat Fraley. Pat Fraley was 63 in Scooby-Doo: Mystery in Motion as 'Uncle Carl (voice) (archive footage)'.