|This article is about a/an monster in Power Rangers Lost Galaxy.|
- "Say good night Rangers, forever!"
- ―Nightmare's first words upon growing[src]
Nightmare is a monster under the order of Hexuba sent into her nightmare world to destroy the Galaxy Rangers, who were trapped within after smelling enchanted bouquets of flowers delivered to their quarters from Hexuba's Mansion.
Nightmare served as the finishing blow against the Rangers as Hexuba prepared to destroy them and proved to be a formidable opponent until Mike Corbett destroyed Hexuba's crystal ball by deflecting one of Hexuba's own attacks. With the dream spell broken, the Rangers were able to fight back against Nightmare better with Damon injuring him with a strike from his Power-Up Claw into Nightmare's cannons.
After taking a hit from Damon, Nightmare grew giant and the Rangers called upon the Galaxy Megazord to fight him. Nightmare was too much for them so Damon called upon the Centaurus Megazord to help. The Centaurus Megazord beat up Nightmare, allowing the Galaxy Megazord to destroy him.
Powers and abilities
- Super Strength-Nightmare has incredible strength, being able to overwhelm the Rangers and take Leo down with two jabs and a punch.
- Armor-Nightmare has extremely strong armor covering his stomach and chest. It was powerful enough to be undamaged by Leo's Quasar Saber and even the Lights of Orion's fireball attack bounced right off of him. The only way to harm him was to wait until he opened his chest for his cannon attack.
- Weapon Combat-Nightmare is a master of close quarters weapon combat, being able to fend off and defeat all five Rangers in a five on one duel.
- Chest Cannon Barrage-As mentioned, Nightmare can open up his chest at will to reveal cannons from which he can fire a volley of energy blasts. One barrage was powerful enough to take down all five Rangers and knock them into the river. The only way to defeat him however is to strike the cannons when the hatch is open although it will trigger his self-growing ability.
- Self Growth-Like almost every monster in Lost Galaxy, Nightmare can make himself grow seemingly at will. He did this after being defeated by Damon's strike to his chest cannons.
- Crescent Sword-Nightmare has a massive curved sword resembling part of a crescent moon that he can use in combat.
- Energy Reflection-Nightmare can deflect energy blasts with a single swing of his sword, as seen when he knocked back the blasts from Kai and Maya's Quasar Launchers.
- He was voiced by Walter Jones who played Zack in Mighty Morphin Power Rangers.
- He is the last monster in Power Rangers Lost Galaxy.
- It’s unknown if he had any last words before his death.
- Zakkasu - Super Sentai counterpart in Seijuu Sentai Gingaman. See comparison page.
- Nightmare (Dino Super Charge) - Power Rangers counterpart in Dino Super Charge. See comparison page. (Sharing the Same Name)