Skeleton Warriors was a 13 episode cartoon series, which originally aired in 1993-1994.
The story takes place on the distant planet of Lumimaire. The conflict of the plot revolves around the need to control the Lightstar Crystal. This powerful crystal powers the great city of Luminicity. Baron Dark, the show's main villain, tried to steal the crystal in order to gain control over its incredible power. He only succeeded in obtaining half of the crystal, with the other half being obtained by Prince Lightstar.
The half of the crystal that the Baron Dark managed to obtain turns him into a living skeleton. It also gives him the power to turn those with evil hearts into living skeletons for his army.
Prince Lightstar forms part of the Legion of Light. It consists of  Prince Lightstar, Grimskull, and Talyn. They also have been endowed with great powers through their half of the Crystal. They team together with their uncle Ursak to battle the evil Baron Dark.
In 1994, Playmates wanted a new line that would be as popular as the Ninja Turtles, the result would be a story about a legion of good guys going after a bunch of evil, living skeletons. The detail these figures (especially the skeletons ) is outstanding. Each figure had unique, highly-detailed weapons, one weapon which could be fired by spring loading. Many of them had gold chrome plating on their armor and the skeletons had shiny cold eyes which added to their fearsome look. Figures for both sides had a plastic crystal somewhere on their outfit which was available in an assortment of colors. Talyn was made for the first season but was pushed back for retooling and eventually ended up not being made at all.