Scrappy-Doo sock 'em!" Another of Scrappy-Doo's catchphrases is, "Ta dadada ta daaa! Puppy power!". He is also quite strong, capable of smashing down solid rock walls and carrying both Scooby and Shaggy over his head seemingly without effort. The character was created by Joseph Barbera and developed by writer Mark Evanier, who has acknowledged that Scrappy's personality was largely based on that of the "Looney Tunes" character Henery Hawk. In "Scooby-Doo Meets the Boo Brothers", "Scooby-Doo and the Ghoul School", and "Scooby-Doo and the Reluctant Werewolf", Scrappy is more toned down, as he is less feisty and a little more cowardly,
Scooby-Doo, Where Are You! plans to create a non-violent Saturday morning program that would appease the parent watch groups that had protested the superhero-based programs of the mid-1960s. Originally titled "Mysteries Five", and later "Who's S-S-Scared?", "Scooby Doo, Where Are You!" underwent a number of changes from script to screen (the most significant being the downplaying of the musical group angle borrowed from "The Archie Show"). However, the basic concept—four teenagers (Fred, Daphne, Velma, and Shaggy) and a cowardly, clumsy Great Dane (Scooby-Doo) solving supernatural-related mysteries—was always in place. "Scooby-Doo" creators Joe Ruby and Ken Spears served as the story supervisors on the series.