Actor
David Markus
David Markus is credited on 1 movie and 5 TV shows, best known by TMDB votes for Scooby-Doo! Mystery Incorporated, Justice League and Family Matters.
Filmography · 6 titles
US streaming apps shown under each title, checked October 5, 2026. Tap any title for where it streams and what it costs.
Scooby-Doo! Mystery Incorporated
2010 · TV show
On Netflix
Justice League
2001 · TV show
On HBO Max
Family Matters
1989 · TV show
On Hulu and YouTube TV
Saved by the Bell: The College Years
1993 · TV show
On Wonder Project
The Flintstone Kids' "Just Say No" Special
1988 · Movie
Not on a US subscription app
Popeye and Son
1987 · TV show
On Prime Video