He is a Great Dane that looks exactly like Scooby. In Scooby's puppy years, he wore square-framed glasses like his other son, Skippy-Doo, and a tie. After Scooby grew up, he wore a small vest and his fur had wrinkles.
Much like Scooby, Dada-Doo enjoys eating and can be scared easily, but when Buster McMuttMauler cornered a puppy, Dada-Doo bravely came to the rescue. He loves his family and children very much. Dada-Doo also hated wearing the Doo family collar.
- A Pup Named Scooby-Doo: "Curse of the Collar", "The Were-Doo of Doo Manor"
- The New Scooby and Scrappy Doo Show: "Wedding Bell Boos!"
- The New Scooby-Doo Mysteries: "A Night Louse at the White House"
- The 13 Ghosts of Scooby-Doo: "It's a Wonderful Scoob", "The Ghouliest Show on Earth"
- In the Norwegian dub of The 13 Ghosts of Scooby-Doo, Dada-Doo was voiced by Hallvard Lydvo.