Skeleton King

The Skeleton King is the main antagonist of the series and the Hyperforce's sworn enemy. His servants include the Formless.

Origin
The Skeleton King was originally the kind and humble Alchemist who lived in the region later known as the Zone of Wasted Years. He was a close friend of Captain Shuggazoom, who requested him to make a substitute heroic force, which will later be known as the Hyperforce. At one stage, the Alchemist was studying the Netherworld, which contained a group of evil beings termed by the Verron Mystics as the "Dark Ones". Captain Shuggazoom was at first worried that these evil creatures would breach the barrier the Alchemist created, but he assured him that they were all safe. Unfortunately, Mandarin accidentally caused a breach to occur by jumping on the main console, releasing two of the creatures into the world: a demon-like being who subdued the Alchemist, and a worm like being that would eventually become the Dark One Worm.

Current Skeleton King
After the Alchemist's soul was tainted with evil, he became the Skeleton King. His body turned half skeletal and half machine. The Skeleton King has sworn to destroy Shuggazoom City along with the Hyperforce. He mostly uses Formless to attack, but often creates new creatures to lay waste on the city. As the series advances, Skeleton King broadens his means of attack, going as far as to pursue the Hyperforce at a psychological level. Such as in the episode In the Grip of Evil, where he attacks all of them in a dream.