Scrappy Rex

Scrappy Rex was a giant monster Scrappy-Doo morphed into after absorbing all the protoplasms.

Scooby-Doo
He only needed Scooby's protoplasm to complete his transformation. He then chased Shaggy Rogers and Scooby until he had them cornered. He then managed to catch Scooby after Mary Jane, Shaggy's girl friend, handed him over. Scooby told Scrappy to sit down and then hit his nose. Scrappy roared angrily at Scooby. Scrappy handed Scooby over to the pincer to take out Scooby's protoplasm. But then the Mexican wrestler, Zarkos, after his defeat by Daphne Blake fell over the vat releasing the people's protoplasms. Scrappy who was angered by this telling the Mystery Inc. gang that wasn't over. Shaggy then defeated Scrappy Rex by pulling the Daemon Ritus out of his chest and destroying it. Scrappy Rex lost all of his protoplasms and morphed back to Scrappy-Doo.

Appearances

 * Scooby-Doo