Drako was an alien who was sent to find the Starchild, an alien child named Quarx.
The Starchild was in trouble for using his powers to cause destruction across the universe and Drako was supposed to turn him in, but he instead desired having Quarx's powers for himself.
After Splinter convinced Quarx to grow up, the now adult Starchild used his powers to teleport Drako to a prison planet.