Icon-goseiger.pngThis article is about a/an episode in Power Rangers Megaforce.

For the Giant Robo from Goseiger, see Gosei Ultimate

Gosei Ultimate is the fourteenth episode of Power Rangers Megaforce. It is the conclusion of the seven-episode Robo Knight arc, which features the debut of the Gosei Ultimate Megazord, as well as the final appearance of Bigs and Bluefur and marks the end of the threat posed by the Toxic Mutants.


When Bluefur and Bigs use the Aurora Box to become even more powerful, Gosei and the Mega Rangers must pull out all the stops to defeat them and save the earth.


The episode begins in the Toxic Mutants' lair, where Bigs and Bluefur are using the Aurora Box to empower their slime. Once it's finished, they head outside to wreak havoc to Earth.

Gosei is checking up on Tensou, who is working on something to help the Rangers.

Bluefur and Bigs arrive in a large city and begin using the Aurora Box to spread the slime coming out of Bigs' body. Robo Knight witnesses a purple slime in a trash can and blasts it, but discovers that it only spreads more. The Rangers arrive and morph to fight the mutants, but they easily overpower them. Robo Knight uses a special freeze card to freeze the slime in place before Bigs and Bluefur use the box to deal heavy damage to him before leaving. The robot responds that although it is not critical, he must recover his systems, and the freeze card he used will keep the slime in place for only a little while.

It suddenly begins raining and the slime unfreezes. Bigs and Bluefur return to spread more slime. The Rangers morph into ultra mode. It seemingly destroys Bigs and defeats Bluefur, but it's revealed that the Aurora Box saved Bigs, who is hiding inside of it. Night falls and Bluefur uses the Zombats to enlarge the Aurora Box and places it on a building.

The next morning comes and the Rangers are prepared to fight Bluefur, with Robo Knight making a full recovery. But Bluefur reveals that the Aurora Box saved Bigs and his body creeps out onto the building. They then reveal their master plan: to cover the Earth with Bigs' slime, turning the Earth into a giant Bigs. Robo Knight stays to take care of Bluefur while the Rangers head inside the building to get rid of Bigs.

After handling some Loogies along the way, they make it to the top of the building, where they see Bigs hanging from some wires. The wires entangle the Rangers and begin sucking up their energy. But Noah uses his shark power to free everyone and the Rangers use their ultimate blast to destroy Bigs once and for all.

Enraged, Bluefur fights Robo Knight aggressively. Vrak sends the Zombats to enlarge Bluefur, who comments that the Rangers will never escape the Aurora Box. Robo Knight morphs into the Gosei Grand Megazord. As the Rangers try to find their way out of the Aurora Box, Tensou tells Gosei that he's finally finished with modifications. The Rangers can now use their Ultra Powers to fly the top of the command center as the Gosei Ultimate Command Ship. They escape the Aurora Box, only to find Bluefur overpowering Robo Knight.

The Rangers turn the ship into the Gosei Ultimate Megazord and use it to destroy Bluefur, ending the Toxic Mutants forever.


Power Cards

  • Megaforce Red - Dragon Sword, Gosei Dynamic, Windrive, Miracle Gosei Power (x2), Miracle Gosei Dynamic (x2), Ultimate Charge (Gosei Ultimate Megazord)
  • Megaforce Pink - Phoenix Shot, Gosei Dynamic, Windrive, Miracle Gosei Power (x2), Miracle Gosei Dynamic (x2), Ultimate Charge (Gosei Ultimate Megazord)
  • Megaforce Black - Snake Axe, Gosei Dynamic, Defenstone, Miracle Gosei Power (x2), Miracle Gosei Dynamic (x2), Ultimate Charge (Gosei Ultimate Megazord)
  • Megaforce Yellow - Tiger Claw, Gosei Dynamic, Defenstone, Megaquake, Miracle Gosei Power (x2), Miracle Gosei Dynamic (x2), Ultimate Charge (Gosei Ultimate Megazord)
  • Megaforce Blue - Shark Bowgun, Gosei Dynamic, Istop, Miracle Gosei Power (x2), Miracle Gosei Dynamic (x2), Ultimate Charge (Gosei Ultimate Megazord)
  • Robo Knight - Freezestorm, Vulcan Cannon, Knight Dynamic, Lion Mechazord, Knight Brothers Zords, Gosei Grand Megazord


  • This episode marks the death of two major villains, Bigs and Bluefur, the first such occurrence since Creepox's demise, and the end of the Megaforce arc of the Toxic Mutants.
  • Even though they don’t show it, Bigs's slime mostly contains white plastic.


  • The Rangers recognize the Aurora Box even though this is their first time actually seeing it on screen.
  • Although Gia blasts Bigs and Bluefur with her Mega Quake to stop the Aurora Blast, it was still clearly fired and should have hit the Rangers.
    • Also, the Aurora Blast symbol vanishes between shots.
  • When the Gosei Ultimate Megazord transformed, it was flying over some kind of wasteland and not the city where it just was.
  • During the battle against the Gosei Ultimate Megazord, random explosions kept on happening behind it even when there weren't any attacks going on.
  • After the girls beat the guys to Ernie's BrainFreeze by taking a shortcut, Gia reminds Jake to not forget to pay, even though the bet was that the last one to Ernie's BrainFreeze had to pay. The last one to set foot in the building was Troy.
  • During the morphing sequence, the girls's icon boxes are the wrong colors.
  • Originally the aurora box is black but it appears green like the fake erurei box.

See Also


Power nav icon.png List of Power Rangers Megaforce and Super Megaforce episodes Icon-goseiger.pngIcon-gokaiger.png

1: Mega Mission • 2: He Blasted Me With Science • 3: Going Viral • 4: Stranger Ranger • 5: United We Stand • 6: Harmony and Dizchord • 7: Who's Crying Now? • 8: Robo Knight • 9: Prince Takes Knight • 10: Man and Machine • 11: Ultra Power • 12: Last Laugh • 13: Dream Snatcher • 14: Gosei Ultimate • Halloween Special: Raising Spirits • 15: The Human Factor • 16: Rico the Robot • 17: Staying on Track • 18: The Human Condition • Christmas Special: The Robo Knight Before Christmas • 19: The Messenger • 20: End Game

Super Megaforce

1: Super Megaforce • 2: Earth Fights Back • 3: Blue Saber Saga • 4: A Lion's Alliance • 5: Samurai Surprise • 6: Spirit of the Tiger • 7-8: Silver Lining • 9: Power of Six • 10: The Perfect Storm • 11: Love is in the Air • 12: United as One • 13: The Grass is Always Greener... or Bluer • 14: In the Driver's Seat • 15: All Hail Prince Vekar • 16-17: Vrak is Back • 18: Emperor Mavro • 19: The Wrath • 20: Legendary Battle • EX: The Legendary Battle: Extended Edition