I own nothing, all of the characters belong to Dragonball Super and DC Comics.
Chapter 1- Frieza's Arrival
"I don't have to destroy you, do I Frieza?" The voice came from a purple, cat like creature adorned in royal appearing attire.
Frieza was a villain himself, but he was no match for the Destroyer God and he was greatly aware of that reality. Frieza powered down to his base form, his skin was white with purple on his forehead, arms and legs.
"Of course not Lord Beerus, I was merely having fun with this monkey here," he said pointing to Goku.
"Come Frieza, we have matters to discuss." The tense conversation was interrupted by Beerus's attendant, the tall humanoid Whis. Whis wore clothes very similar to that of his master Lord Beerus, but was much taller and had pale blue skin and white hair. He also noticeably had a halo around his neck, since Whis was an angel. He was actually much more powerful than his master Lord Beerus, an important part of the God and Angel relationship. He touched Frieza on the shoulder and the three were transported far away from Earth to Beerus's planet.
"I have a favor that I need you to take care of," Beerus said to Frieza.
While Frieza understood and respected the hierarchy of the universe, he didn't become galactic emperor by doing favors.
"What's in it for me?" He asked coyly.
"I won't destroy you," Beerus replied angrily, he had never been long on patience or used to being questioned.
"My lord, maybe you should sweeten the pot a little bit," Whis interjected.
"Fine," the god sighed. "If you accomplish this task I won't destroy you and I will reappoint you as galactic emperor. Away from Earth and Goku and Vegeta. You will have my full backing to destroy anything you please."
"What is the favor?" Frieza asked intriguingly.
Whis pulled out his staff and a picture of Earth appeared as a hologram.
"Isn't that the planet we just left?"
"Yes and No. This earth exists in a different dimension from that of Goku's. Separate from Lord Beerus's jurisdiction and Grand Xeno's reign. As you know, we are preparing for the Tournament Of Power which is why you were brought back to this world. The problem we are having is this other Earth. We have discovered that it is interfering with Goku and Vegeta's training."
"Like I care about those monkeys," the villain from hell replied smugly.
"You will care if we lose the tournament and our universe is erased. I care about my existence," the Destroyer God responded.
"Ahem, May I continue? Anyway this Earth is pulling a lot of the Ki energy from our dimension. There are strong warriors there and there is only a limited amount of Ki that can be spread amongst the two Earths. We need you to go and destroy that Earth and it's strong warriors in order to release more life energy for our Universe 7 team. Our team is currently training and they need this new release of Ki energy in order to get stronger, this is quite an important task," Whis finished.
"Why are you asking me?"
"Because you're a villain. Goku and Vegeta would not do this. Goku would rather lose and Vegeta is too proud, besides he hasn't destroyed planets in a long time. You on the other hand, have no morals and would do anything to win. Also," Whis smiled. "This would be a great opportunity to gauge whether you would make an adequate God of Destruction when Lord Beerus retires."
"I accept, when do I start?"
"Now," Beerus smiled.
There was a bright flash of light as Frieza was transported in a space ship to another dimension.
Meanwhile at the Watchtower
The Martian Manhunter was alone in the orbiting space satellite walking around. The empty station could get quite lonely at times especially when the other heroes were on Earth in their respective cities. The tower was quiet as he was the only member inside, the tall green Martian stopped at the control room to look over the cameras and put eyes on the planet.
Suddenly a blaring alarm went off, as the scanners reported an unknown spaceship flying past the moon.
"What is that! A ship??"
The Manhunter quickly pressed the alarm to warn the other members and opened the doors of the watchtower to meet the oncoming ship. He put his hand out to impede the ship's path.
Frieza's ship came to an eerie halt.
The villain from hell exited the cockpit of his ship and glider towards the Martian. Frieza opened his mouth to say words but remembered that sound doesn't carry in space. He the raised his fingers and fired red beams from his hand. The Martian was taken aback by this attack and wasn't ready with his translucent defense. The beams ripped through the body of the Martian and he tried to shout out in agony, but couldn't. He stopped moving, floating lifelessly in space. Frieza then turned his attention to the satellite floating in the sky, he raised his hand and launched a large purple energy blast which blew up the entire tower. Flying back to his ship, he set a course for Earth.
Read and review if you like the start I'll continue with this concept.