Biology
Garvaks had green scales that were dry and flaky. They had wide nostrils and jagged rows of teeth.
History
A Garvak named Abel Crumpton destroyed the planet Zantor, killing almost all the Zantorans. He stole the Egg of Abundance, a device that held the genetic template of Zantor. Crumpton planned to use it to repopulate Earth with Garvaks and create a new Garvak empire. He and the Garvaks on Earth were turned into chickens and destroyed when Harry Sullivan switched the Egg of Abundance for an egg in Crumpton's machine. (PROSE: The Man from DOCTO(R))