"Looks like it's Megazord time," suggested Troy, as giant sized Vrak advanced on them.
"Aw, yeah," agreed Rainbow Dash.
Troy turned to the other heroes, "All of you get back to the Great Fox and Sky Patrol, stay safe," he said.
"I'll stay and help you," Rex replied.
"You can't help, unless you've got something big to take Vrak on," Jake said.
"Don't worry I've got something for that," Rex finished.
With that, the Rangers summoned their Mechazords: the Gosei Dragon Mechazord, the Gosei Phoenix Mechazord, the Gosei Snake Mechazord, the Gosei Tiger Mechazord and the Gosei Shark Mechazord.
Twilight and the rest of the Mane Six summoned their Zords: the Super Mega Skyship, the Super Mega Jet Zord, the Super Mega Wheeler Zord, the Super Mega Racer Zord and the Super Mega Sub Zord.
Orion and Rainbow Dash summon their zords, Orion summoning: the Lion Mechazord and the Knight Brothers Zords these being the Sealion Mechazord and the Skylion Mechazord and Rainbow Dash summoning the Q-Rex Zord.
Once summoned, the zords merged into their Megazord forms: the Gosei Great Megazord, the Legendary Megazord, the Gosei Grand Megazord and the Q-Rex Megazord.
The four Megazords turned to face Vrak, "The four of you won't be enough," Vrak cried.
"That's why they've got me" answered Rex, in a flash Rex transformed into his full EVO (Exponentially Variegated Organism) form.
Vrak charged at the five of them, drawing a sword made of dark energy.
Orion's Megazord countered Vrak, but Vrak knocked it to the ground and continued towards the remaining four.
Rex responded by dashing at Vrak and upper cutting him, the remaining megazord draw their weapons.
"This is it, guys," Troy said.
Rex was holding his own against Vrak, but he moved to allow the three to attack.
Back on Sky Patrol.
Everyone watched the megazords and Rex battling Vrak, the air support team was still out there trying to distract Vrak.
"I can't just stand here watching," Sliver said, "If I'm going out, I'm going out fighting."
"But what can we fight with?" asked Yang.
"We have the chaos emeralds, maybe you and Sonic should go Super," suggested Sally.
"Sounds like a plan Sal," agreed Sonic.
"Maybe you can find Shadow out there," Dante added.
"Even then the two of you won't be enough," Bunnie finished.
"Leave that to me," Blaze said, "I can use the Sol Emeralds to aid you."
"Alright, you guys," Sonic smiled, "time to show that creep, that good will always win in the end."
"I'll try to get through to the Master Emerald," added Knuckles "If I use the 'Tikal's prayer', I can cut off Vrak's connection to the corrupted Chaos energy he is using."
"Right," Sonic finished, "time to stamp out some evil, Super Style!" in a flash Sonic and Silver transformed into their super forms, Blaze followed with her Burning Blaze form.
"Good luck," Sally smiled.
The Three of them left Sky Patrol.
Sally turned to Nicole, "Nicole, open all gun ports and prepare to fire!" she ordered.
Nicole nodded, "Roger" she replied.
Sally then turned to Rotor, "get to the firing controls Rotor, finger on the trigger" she ordered.
"You got it, Sally," Rotor nodded, he dashed off the weapons room.
She then turned to the monitor to talk to Peppy in the Great Fox, "Weapons ready?" she asked.
"Ready and waiting, sir Ma'am" Peppy replied.
She looked to Dante, "I want you out on the outside so that you have a clear shot" she said.
"Roger that," Dante replied,
Back outside.
The five were trying to weaken Vrak so they could land a blow with there weapons.
Vrak simply blocked all their attacks and attacked them with more destrctive blows.
"We need to keep trying," Troy said, as the team tried again to attack Vrak again.
"He's just too strong, Troy," Noah said.
"This is for my home world!" Orion cried, his megazord dashed straight at Vrak.
"I don't recalled the name of you planet," Vrak smiled.
As Orion's megazord was about to attack, Vrak stabbed it through the chest.
"Oh, wait yes I do," Vrak replied, as Orion's megazord crashed to the ground, destroyed.
"Orion!" Rex cried, he dashed at Vrak from behind, but Vrak dodged Rex and incapacitated him with a single blow.
Rex toppled to the ground and reverted back to his human form. Orion, meanwhile, who had been thrown from his megazord managed to get up and drag Rex out of danger and back to Sky Patrol.
Elsewhere, the air support team, with a little help from Sonic, Shadow, Silver and Blaze, were flying around Vrak's head doing what they could to slow him down.
"You are like gnats, compared to me," Vrak laughed, as he tried to swot them away, as if they were files.
"Keep it up," Blaze cried, "we are holding him back."
"You heard Blaze" Tails command, "Bump up the power!"
Back with the three megazords.
"We can't beat him in our normal megazord modes," Troy said, after some thinking.
"And we can't beat him with our basic attacks," Twilight followed.
"So then we need to go ultra and use our finishing moves when we get an opening," suggested Rainbow Dash.
"It's the only chance we've got and we've only got one shot," Twilight added.
"Alright, let's go for it!" Troy finished.
In a flash, the Gosei Great Megazord transformed into its ultimate form, the Ultra Gosei Great Megazord. 
Finally, the Legendary Megazord, the Q-Rex and the Turbo Falcon zord merged together and transformed into the megazord's ultimate form, the Ultimate Legendary Megazord.
Once transformed, the two ultrazords advanced on Vrak.
"Ultra or not, your zords still aren't enough!" Vrak declared.
Back on Sky Patrol.
"Targets locked, Sally," Nicole said.
"On my count, Nicole," Sally replied, "three, two, one, FIRE!"
All of Sky Patrol's weapons fired all at once: Lasers, Laser Blaster, Particle Beam Cannon, Omochao Gun, Sonic Power Cannon, Anti-Air Missiles and Volkan Cannon.
Dante, from on the outside of Sky Patrol, began firing from another of his devil arms called Pandora, a briefcase that could transform into 666 different weapons, right now in the form of a bazooka called Grief.
After firing a few shots, Dante transformed Pandora in a mobile missile battery called Argument. 
"Fire!" cried Peppy, The Great Fox began firing blast after blast from its T&B-H9 Laser cannons.
Back inside Sky Patrol, Knuckles had his eyes shut, concentrating, "Tikal hear me," he said, "the servants are the seven chaos. Chaos is power, enriched by the heat. The controller exists to unify the chaos."
Back outside.
Vrak felt something was wrong, his connection to the chaos energy had been cut off.
"What's going on?" Vrak said, shocked, "I can no longer tap into the chaos energy?!"
"That'll Knuckles," Sonic replied, "he'll be pretty mad about you taking his rock from him."
"Time to cut you down to size," Silver continued.
"Alright, its time to end this nightmare once and for all," Troy said, as he, the others and the Mane Six prepared their ultrazords' finisher moves.
"Chaos energy or not I will still destroy you," Vrak snarled. "You cannot win, you cannot beat me!"
"Now!" The Rangers and the Mane Six cried together.
Both ultrazords fired their finisher moves at the same time.
Vrak used what power he had left, to shield himself from the attacks.
"Give it all you've got, everyone," Troy said.
"We're not going to make it," Twilight replied, using everything she and her friends had.
Suddenly the attack was joined by a blast from Sonic, Shadow, Silver and Blaze all together.
"I can't hold it," Vrak groaned, straining his power to its limits, "what, what are you?"
"We are the hope of the multiverse," Twilight and Troy answered, together in unison, "we are the answer to all living things that cry out for peace, we are protectors of the innocent, we are the light in the darkness, we are truth, allies to good, nightmares to you."
With that, the attacks passed through Vrak's shield and hit him, draining most of his remaining power, regressing him back to normal size.
"Aw, yeah!" Rainbow Dash whooped, "we are strong, we are tough, we're invincible!"
"Right Dashie" nodded Pinkie, "We're the ones Vrak should fear the most."
Vrak fled back to the floating castle, back to his throne room.
Suddenly, Luna stepped out of the shadows, now morphed out of her Battle Fire amour, "This is where it ends, Vrak," she said.
"You think you've won?" Vrak laughed, "you don't make the plans," he continued, "I do, me, only I know how this all turns out."
Before Vrak could attack, out of nowhere, Dante threw two swords, using another of his devil arms, this one was a demonic backpack called Lucifer, and knocked him into a wall. 
"You think you can stop me?" Vrak asked, "I am evil incarnate, I am the Nightmare king, I am the prince of...." he stopped as he noticed another pony standing behind Luna.
"Darkness?" Vrak said, confused. The Pony stepped forward, it was Celestia.
"Rise and shine," Luna stated, Celestia's horn glowed and the brightest sun ever seen in Equestria burst through the dark clouds and shone down on the floating castle.
Vrak's body began to burn and smoke as soon as the sun light touched him, the only thing keeping light from touching him fully was Luna's shadow.
"You are Princess Luna," Vrak said, cowering before her.
Luna spread her wings wide, "I am the Princess of the Night," she replied, "and you're dust."
With that, Luna flew out and cleared way for the sunlight.
Vrak's body instantly burst into flames and continued to wither away.
Luna glided down from the air and fired a magical blast at Vrak, completely destroying him and the Nightmare Force.
Celestia walked over to her little sister, "It's over," she said, putting a hoof on Luna's shoulder, "It's all over."