Robots were big in animation in the mid-80's. The trend started with the American introduction of Voltron, but then exploded in short order. Everyone knows that The Transformers, borne out of a Japanese toy line, became the 2nd Hasbro property to be adapted to television by Marvel & Sunbow, and, of course, has become a cottage industry all by itself. However, there existed another toy line that today could be construed as virtual kissin' cousins to the Autobots & Decepticons!
Like the Transformers, Tonka's GoBots were supposedly from another planet, bringing a long-standing grudge to Earth. The Guardians & Renegades, however, had one big advantage. Both groups were originally humanoid in nature, and were transmuted into cyborg robots when their homeworld experienced a cataclysmic event. Shortly after The Transformers debuted, Hanna-Barbera & Tonka introduced viewers to Challenge of the GoBots, starting with a miniseries that aired in syndication. The ongoing series followed a year later, but lasted just 2 seasons, with a feature film, "Battle of the Rock Lords", released in 1986.
Here's the intro:
In recent years, Hasbro has bought out a number of former rivals, including Tonka, becoming the biggest toy manufacturer on the planet. In addition, I believe Hasbro holds the rights to the GoBots cartoons, as opposed to Cartoon Network, which would explain in a nutshell why the series doesn't air on Boomerang, which could certainly use some freshening of their schedule.
The theme music kicks major butt, as opposed to Transformers, but the close of the open is a copy of Challenge of the Super Friends from just 6 years earlier. Today, it's more likely that the GoBots & Transformers would share the same universe, but so far, Hasbro hasn't given this any consideration.