Ten Terrors

The Ten Terrors of the Underworld are a Pantheon of ten god-like demons/monsters and the most powerful servants of the Master. They supposedly only existed in the worst of nightmares but were discovered by Necrolai in The Light, dwelling in the Lower Sanctum of the Underworld. They are all normally giant in size, especially in their lair but they can change their size at will to match the height of the Rangers. They are adamant about upholding the Laws of Darkness and are willing to kill each other (and be killed) for transgressing them; it appears that if they don't follow the Rules, there will be dire consequences for them and they may be banished. Their cardinal law is that those who oppose dark magic are to be punished. They appeared on Earth to demonstrate their power and announce themselves. They each wield a different kind of weapon.

In their lair stands a giant stone monolith known as the Stone of Judgment which projects a ball of light that passes over the Ten Terrors, stopping on the weapon of whoever is chosen to punish Earth next, however, in the first part of Mystic Fate the Stone of Judgment is destroyed when The Master used it as a portal into the Underworld, causing it to shatter. They wait for their Master's return and resurrection. Although they easily decimated the Rangers and their Megazords in their first appearance, the Terrors were less successful in individual attacks on the surface world. Nearly all of the Terrors were destroyed, the only Terrors that survived were Itassis and Matoombo as they both eventually defected to the side of good, (although both of them were destroyed at one time, Matoombo was destroyed when Sculpin struck him down and the Master was reborn in his body and Itassis was slain by the combined strengths of Black Lance and Sculpin).