Scooby-Doo: Mystery Mayhem had 2 Average Viewers and 1 channels streaming on August 5, 2019, Scooby-Doo: Mystery Mayhem had 23 Average Viewers and 1 channels streaming on August 29, 2019, Scooby-Doo: Mystery Mayhem had 8 Average Viewers and 1 channels streaming on September 13, 2019, Scooby-Doo: Mystery Mayhem had 7 Average Viewers and 1 channels streaming on September 14, 2019, Scooby-Doo: Mystery Mayhem had 3 Average Viewers and 1 channels streaming on September 19, 2019, Scooby-Doo: Mystery Mayhem had 7 Average Viewers and 1 channels streaming on September 29, 2019, Scooby-Doo: Mystery Mayhem had 13 Average Viewers and 1 channels streaming on October 9, 2019, Scooby-Doo: Mystery Mayhem had 13 Average Viewers and 1 channels streaming on October 10, 2019, Scooby-Doo: Mystery Mayhem had 11 Average Viewers and 1 channels streaming on November 30, 2019, Scooby-Doo: Mystery Mayhem had 9 Average Viewers and 1 channels streaming on December 7, 2019, <
Scooby-Doo: Mystery Mayhem had 4 Average Viewers and 1 Average Channels streaming on March, Scooby-Doo: Mystery Mayhem had 8 Average Viewers and 1 Average Channels streaming on May, Scooby-Doo: Mystery Mayhem had 6 Average Viewers and 1 Average Channels streaming on June, Scooby-Doo: Mystery Mayhem had 6 Average Viewers and 1 Average Channels streaming on July, Scooby-Doo: Mystery Mayhem had 22 Average Viewers and 1 Average Channels streaming on August, Scooby-Doo: Mystery Mayhem had 7 Average Viewers and 1 Average Channels streaming on September, Scooby-Doo: Mystery Mayhem had 13 Average Viewers and 1 Average Channels streaming on October, Scooby-Doo: Mystery Mayhem had 11 Average Viewers and 1 Average Channels streaming on November, Scooby-Doo: Mystery Mayhem had 9 Average Viewers and 1 Average Channels streaming on December,