Dairugger, the super robot, must defend the Rugger Guard and its fleet as they attempt to continue their mission.

When Galveston repeatedly refuses to accept peaceful coexistence, the Rugger Guard mission turns to finding the Galveston homeworld, liberating its people from their despotic Emperor, and helping them find a new planet before their world collapses.

Each of the 15 parts is referred to as a "Rugger" and can combine into larger machines as separate teams called Kurugger (Air), Kairugger (Sea), and Rickrugger (Land), as well as together to form the super-robot Dairugger.

Galaxy Garrison (銀河警備軍, Ginga Keibi-gun) is a planetary union of Earth, Sala, and Mira.

The Galveston Empire (ガルベストン帝国, Garubesuton Teikoku) is an advanced alien civilization in search for planets to colonize, as their home planet is rapidly dying from depletion of its natural resources and the deterioration of its Van Allen radiation belt.

In 1982, the original DX Dairugger XV toys were released by Popy Pleasure under the toy release number of GB-72, as part of the Chogokin label, and constructed of high-quality die-cast materials, with transforming gimmicks, which could separate only into the three larger combined vehicles.

A larger version of Dairugger XV was also released, which did not contain die-cast materials, as the metal content was too heavy for the design and for the friction motors installed in many of the vehicles.

LJN released this toy in the Voltron series in 1985, with all of the parts remolded in roughly their proper colors and the sword in yellow.

The initial release was limited to a few hundred units and was plagued with quality control issues and design flaws.

Dairugger's Voltron incarnation is called to action by an outpost being attacked by a Robeast, but the vehicles take too long to combine (partly because they messed up halfway through).

By the time Dairugger gets there, most of the crew is dead, and the sole survivor shoots himself when he realizes it's not the Lion Voltron.