They come from planet Dexon, which they refer to as "the world of the seventh sphere"; and their leader is referred to by the titles of Dex Nova or Mighty Omnipotent One. They are an imperialistic civilization with access to highly advanced technology, and have conquered numerous other species; many of which are presented in an underground resistant group on Dexon.
In 1988, the Dexoids took interest on Earth as their next target for invasion. They regard Earth bears as a species of highly advanced intellect, a conclusion drawn from monitoring two individuals, namely Yogi Bear and Boo Boo; the former of which often claims being smarter than the average of his kind. After abducting the two bears, the Dexoids used them as templates to create an army of artificial clones (or Duploids, as they are called) to take over the planet. The real Yogi and Boo Boo managed to drive away the invasion by convincing the Dexoids that the Duploids are defective and highly unstable, and thus Earth was saved for another day.
- The Dex Nova has the ability to glow his index finger and flash a beam of energy from it. This might be a reference to the popular Stephen Spielberg film ET the Extraterrestrial, which was released five years prior to Yogi and the Invasion of the Space Bears.
- Yogi and the Invasion of the Space Bears (1988)