Author's Note: I do not own any of the characters

Frieza successfully returned to his own time and spent the next few days seething with fury, humiliated by his defeat at the hands of Trunks. The memory of being pinned down, the bitter taste of defeat—it all clawed at his pride. He couldn't let it end like this, not to a "monkey."

His loyal minion & scientist Aval fearfully approached him and said, "It's a bit of a shame that your older brother Cooler isn't here. Maybe he can comfort you."

Frieza slowly turned around to face Aval and asked, "Cooler?!"

His thoughts drifted to his older brother, Cooler. They've had a strong rivalry their whole lives. Although Cooler was the older brother, Frieza was their father's favorite. So Frieza became the 'Emperor' of Universe 7. "If I can convince him to join forces, perhaps we can annihilate Trunks together," he mused. With a plan in mind, Frieza activated the time machine once more, this time targeting the moment before Cooler's attempted revenge on Goku.

Flash back to the movie 'Dragon Ball Z: Cooler's Revenge'

A blue energy beam shot out from Earth leading towards the sun with a huge yellow orb on the end of it. Attached to the orb was Cooler in his fifth transformed state. Just then, outer space cracked open a smidge and out cale a grey vessel. It was Frieza's time travel machine. He looked out the window to see Goku's Kamehameha wave heading towards the sun. The ships instruments detected a huge power level seemingly at the end of the energy beam.

"That must be Cooler." said Frieza. Even though I would love to watch him die, I need him. Plus, I like the idea of him owing me his life!" he continued with a smirk on his face.

As the Kamehameha beam neared the sun, Frieza leapt out of the ship (his race can survive in outer space), and raced towards his brother.

"That must be the star of this solar system. Maybe I'll just blow that up, instead!" said Cooler.

Just then, Frieza collided with Cooler, knocking him from the Supernova he made, saving him.

"What was that? Frieza?" said a surprised Cooler.

'Yes, big brother."

"How is this possible! I heard you died!"

"Short version, I was brought back to live many years later and I used a time machine to travel back here to the past to find you."

After a moment, Cooler continued. "What do you want, Frieza? I was just about to take care of a certain nuisance," Cooler replied, eyeing Frieza warily.

"If by 'take care of' you mean being incinerated in Earth's star, then yes, but all means, continue. In all seriousness, should be more grateful. Especially since I'm about to say something to you I thought I would never say. I... need...your...help." Frieza admitted, his pride swallowing hard.

Cooler paused, calculating. "Why should I help you? You've always been the one to look down on me," he said, arms crossed.

"Because even if you destroy Goku, there is still a looming threat to our family's dominance in the universe. And you owe me one."

After a long silence, Cooler considered the proposition. Finally, he smirked. "Very well. I'll help you, but this better be worth my time. Bur first..." he turned towards the sun, let's blow up the sun, dooming Earth. Or better yet," turning his head towards Earth, "let's go after that accursed Saiyan together. He's no match for the both of us!"

"No, he isn't. But we can't. "I'm going to need him." he said with disgust in his voice.

"WHAT! WHY?" said a shocked Cooler.

"I'll explain everything once were back in my future time. Let's go." said Frieza.

The pair head towards the time machine, entered, Frieza hit the return controls, and it disappeared back through time and space.

Back on Earth, Super Saiyan Goku fearfully said, "Frieza!" having sensed his energy in space. "But how!"

Back in Frieza's present time, they retrieved to his planet had a little talk on his planet.

"I don't know which is more unbelievable. The fact that some Earth scientist created a bio-mechanical android that surpassed us, the fact that the 'all-mighty' Frieza has finally come crawling to his big brother for help, or the fact that some woman was willing to put up with Vegeta and bore his child!" said Cooler, who was back in his fourth form.

"The latter is the most insane." said Frieza, seated across from Cooler at a white table in his fourth form. "Anyway, it was he that finished me off. After I was resurrected, I had nightmares about it. I went after him, of course, but he got incredibly stronger. Which is why I'm granting you the pleasure of seeing me again."

Cooler rolled his eyes.

"It's quite simple. Both of us go after Trunks. But first, you must train to obtain the golden form I told you about if you are to have a chance to keep up with me. I mean...Trunks."

A flicker of interest sparked in Cooler's yellow eyes. "And what's in it for me?"

"Power," Frieza grinned. "The type that allows us to reign supreme. Our names will echo through heaven and hell as conquerors of the entire universe. We can train together—the both of us will achieve new heights beyond imagination!"

Cooler mulled it over before finally nodding gravely. "Very well. I'm willing to put aside our differences for the sake of family honor."

After a moment, Frieza said, "We can always duke it out later."

"I was hoping you would say that." replied Cooler with a smile.

A short time late, the pair found an asteroid belt—abandoned, uncharted—where they could train Frieza pushed his limits. His transformation into Golden Frieza had once made him nearly unstoppable, but now he sought even greater heights. Cooler, too, focused on reaching a new level.

Days turned into weeks. The harsh conditions of space were no match for their relentless spirit. Every clash of their powerful blows sent shockwaves reverberating through the void, birthing a new power within them. Eventually, Cooler discovered his own version of the Golden transformation, a form that embodied both elegance and brutality—Golden Cooler. Their training culminated in a fierce bonding as they honed their techniques and strategized for the impending battle against Trunks.

Frieza, eager to keep up, perfected his own Golden form, refining his technique and pushing it to its limits. Together, they honed their strength to such an extreme that their combined presence could seemingly shake the heavens themselves.

"Are you ready?" Frieza asked as they stood before the time machine, their auras gleaming with power.

"Ready as I'll ever be," Cooler replied, determination sparking in his eyes. Going back into their fourth forms, the pair entered the time machine & they activated it, hurtling through time and space back to Trunks' future.

It arrived just beyond Earth's orbit. "We could simply destroy the planet." said Cooler.

"That's just what father recommended. But it's not good enough. I want to crush that purple-haired monkley boy with my own hands." replied Frieza. "Remember, I get the killing blow!"

"Of course, brother." said Cooler. As Frieza exited the ship, Cooler thought to himself, "I'll let him do most of the work; I'm sure he wants to anyway. Hopefully, he'll get too tired to defend himself from me!"

Meanwhile, at Capsule Corporation, Trunks was outside in his black tank top, gray sweatpants, and tan boots working on his punches when he felt a powerful surge of ki energy in the sky.

"Frieza, again! And this time, he has brought a friend who is just as powerful. Apparently, he hasn't learned his lesson from the last time." he said.

"Or maybe he did, seeing as how he apparently brought a friend." said Bulma.

"Don't wait up, mother." he said as he put on his blue jean jacket. He then flew to the scene of the power surge. He saw Frieza in his Golden form near the time machine.

"Hello, again, Trunks. Right on time." said the tyrant.

"Where's your friend?" asked Trunks; Cooler was not in sight when he got there.

'You'll find out as soon as you look up!" said Frieza.

At that moment, Cooler dropped down from the sky and delivered a downward punch to Trunks' head. It connected and the half-Saiyan was sent crashing to the ground. He quickly composed himself and stood up to see the two slowly descending.

"Allow me to introduce my older brother, Cooler." said Frieza.

"So, you're the new 'Prince of all Saiyans' by birthright." said Cooler.

Wiping his face, Trunks said, "As the son of Vegeta, technically yes."

"I briefly met your father long ago. An entitled, arrogant half-wit."

"Apparently, he learned that from you two!" Trunks spat out.

"It isn't bragging if you can back it up. You can't stand against both of us. Even with your fancy new Super Saiyan blue hair dye." spat out Frieza.

At that moment, Cooler powered up to his new Golden form: Golden Cooler. The air crackled with their combined energy, and the ground beneath them trembled.

"So, you got a suntan, too?" said a nonchalant Trunks. Frieza and Cooler exchanged glances, a mix of apprehension and anger. "You think you can stand against us now?" Frieza taunted, transforming into his own Golden form.

Trunks smirked, his own energy surging as he powered up. "Absolutely. I was holding back last time." As he transformed into Super Saiyan Blue, the blue glow radiated around him, illuminating the battlefield. His eyes then narrowed and he continued.

"Before we fight, let me tell you something," he said, his voice calm but with an edge that sent a chill down Frieza and Cooler's spines. "The last time we fought, I was only using 10 percent of my full power."

Frieza's eyes widened in shock. Ten percent? The very idea seemed impossible.

With his fists clenched, he screamed as lout as he can. As he did, blue lighting erupted from his body into the sky. The shockwaves sent Golden Frieza and Golden Cooler back. They then saw something incredible, something that they will remember for the rest of their lives. His blue hair grew long, flowing like a river of lightning, and his eyebrows disappeared. The sheer power of his transformation seemed to shake the very fabric of reality.

"What is this?!" Cooler shouted, his & Frieza's eyes were wide with disbelief.

Trunks unleashed a wave of energy that sent both Frieza and Cooler reeling. "This is proof that Saiyans have near-limitless power; the power of a Saiyan who doesn't hold back!"

In the skies above West City, there was a fight to end all fights. Frieza & Cooler were determined to kill the half-Saiyan, but Trunks overwhelmed them at every turn. Trunks darted harmoniously into the battle, his speed and power eclipsed them. His strikes were relentless, every movement choreographed to perfection. Cooler attempted to counter with his newfound strength, but Trunks brushed aside every attack and delivered blows that sent both foes sprawling. Frieza, frantic and desperate, attempted a Death Ball, but Trunks effortlessly deflected it. "Is this all you have?" Trunks taunted, a smirk dancing across his lips.

As the brothers faltered, Trunks unleashed his full strength, a whirlwind of energy that enveloped both Frieza and Cooler. They struggled, but nothing could withstand the force of Super Saiyan Blue 3. Frieza struggled to regain composure, rage flooding his mind.

"This isn't possible!" he screamed. "We are the most powerful beings in the universe!"

Trunks hovered over them, breathing lightly, his expression calm. "Not anymore!"

Finally, Trunks punched them both in the stomachs, sending them crashing down to Earth. Breathing only lightly, he stood over them, a fierce look in his eyes. "And here's the real surprise: I was only using twenty percent of my power." he said.

The horror in Frieza's and Cooler's eyes was palpable. The realization hit them like a ton of bricks. Trunks hadn't even begun to tap into his true strength, and they were already on the verge of death. Fear gripped their hearts as they realized just how far out of their league they were. as Trunks powered up even further, a fierce determination surging within him. "Now, it's time for you both to face the final consequences of your actions."

With one swift motion, Trunks unleashed a final energy attack, obliterating the two brothers in a spectacular explosion of light. As the dust settled, he stood victorious, the echoes of their defeat ringing in the air.

"I am the mightiest being in the universe!" Trunks shouted; his voice filled with triumph. The great threat of Frieza and Cooler was now a mere memory, erased by the power of a determined Saiyan who had transcended the limits of his kind.

With a sigh of relief and powering down back to his normal state, Trunks looked out over the horizon, ready to embrace the future he had fought so hard to protect.