Scooby-Doo and Scrappy-Doo is the fourth incarnation of Scooby-Doo. Ir aired on ABC for one season with sixteen episodes between September 22, 1979 and January 5, 1980.
By 1979, the staff at Hanna-Barbera realized that the Scooby-Doo formula was getting worn out, which gave them reason to parody it in a 1979 prime time special, Scooby Goes Hollywood. In addition, ABC began threatening cancellation for the show, whose ratings were in decline. ABC was going to choose between two shows-Scooby-Doo or an unnamed pilot from Ruby Spears Enterprises. Therefore, for its 1979–1980 season, Scooby-Doo was given a major overhaul, adding the character of Scooby's nephew Scrappy-Doo, voiced by Lennie Weinrib, and changing the name of the show to Scooby-Doo and Scrappy-Doo.
Although still present in these episodes, the characters of Fred, Daphne, and Velma became less essential to the plot and Shaggy, Scooby and Scrappy were the main focus. Marla Frumkin took over Pat Stevens' role as Velma Dinkley towards the end of the season, beginning with episode 12, "The Ghoul, the Bat, and the Ugly". Velma does not speak in episode 16, "The Ransom of Scooby Chief" as she, Fred, and Daphne were not seen much in that episode. Like many animated series created by Hanna-Barbera in the 1970s, the show contained a laugh track created by the studio, and it was the last Hanna-Barbera show to use one.
- The Scarab Lives!
- The Night Ghoul of Wonderland
- Strange Encounters of a Scooby Kind
- The Neon Phantom of the Roller Disco!
- Shiver and Shake, That Demon's a Snake
- The Scary Sky Skeleton
- The Demon of the Dugout
- The Hairy Scare of the Devil Bear
- Twenty Thousand Screams Under the Sea
- I Left My Neck in San Francisco
- When You Wish Upon a Star Creature
- The Ghoul, The Bat, and the Ugly
- Rocky Mountain Yiiiii!
- The Sorcerer's a Menace
- Lock the Door, It's a Minotaur!
- The Ransom of Scooby Chief!
- The plot and title of the second episode are similar to that of Westworld.
- The title of the third episode is a take-off of Close Encounters of the Third Kind.
- The title of the ninth episode is a take-off of Twenty Thousand Leagues Under the Sea.
- The title of the sixteenth and final episode is a take-off of "The Ransom of Red Chief".