Stepping up from rubble looked to be a human, very similar actually. But he wasn't human, well he used to but he has turned into…

A Saiyan. The violent, aggressive, and rude race that exterminates life on planets in order to sell them on the highest bidder. But thankfully, being the polite and nice young man he is, he gained a lot of S-Cells. And also SSJ3, thanks to a certain merchant. He grits his teeth in pain as he grips his head. Before the events here unfolded, he was teleported to earth. Not our earth, but the one where goku and vegeta were on. They were aware of his arrival by Zen-Oh sama, who asked goku if he wanted to train a saiyan student. Of course, he could’ve given Goku a student from universe six, but where’s the fun in that? But he trained under Goku and Vegeta before being teleported to equestria. He freaked out. Once he stopped freaking out, he looked around himself. Immediately he heard someone scream in pain.

That doesn’t mean he is strong though…

His power level at base form is 70,000,000. And Goku and Vegeta have surpassed that point. He had a run in with Frieza, and escaped barely alive. But his new saiyan blood has motivated him to push himself to become even stronger.

“Welp, Got no time to think.” His form was enveloped in a white aura as he sensed someone’s life energy depleting. He flew to where he felt the energy.

Rainbow Dash isn’t faring so well. She was cornered by timberwolves as one of her wings was broken. They leaped at her, ready to rip and tear into the cyan mare.

‘This is the worst way to go out! And most of all, i couldn’t join the Wonderbolts! Damn it all!’

“DESTRUCTO DISC!” A yellow disk of energy cut three wolves in half, there were only three left. A figure jumped in front of her. His hair was black and was down to his neck and his face had one scar on the left cheek. He picked her up and jumped onto a tree branch.

“Stay here.” Her voice wasn’t rough, and she sounded really young, but deep…

Wait a minute, that means that she is actually a..!

“You’re a Stallion!?” The pegasus exclaimed making the creature recoil in shock a bit. He shrugs.

“No. Saiyan. But for a gender, yes, I’m a boy.” He turns super saiyan and looks at her, surprising her “Is there a problem?”

“You are supposed to be weak. All stallions are!” He rolls his eyes and puts two fingers onto his head. He appears in front of a wolf as it lunged at him. With a swift, effortless chop, it shattered to pieces of twigs and wood. Another one lunged at him boldly. He extends his hand and fires the Spirit Sword as a long stream of energy that stabs and impales his opponent with the Spirit Sword rendering the wolf immobilized as long as it is impaled.

He looked at the last growling timberwolf as Marcus extended his arm, opened his palm and turned his hand up at a 90 degree angle. He then condenses his ki in his palm and launches a ki blast that proceeds to detonate in a massive explosion, killing the last one. He reverts his hair back to normal.

“Rainbow Dash! Are you here?” A soft voice called out. He looks ahead to see a yellow mare. She looked like she belonged in a magazine.

“If Rainbow is the sexist mare contiplating her sanity as we speak then,” He points to the branch Rainbow was on “she’s up there.” He started to laugh.

“Rainbow, are you ok?!” he stopped laughing and looked at her. She looked back and snarled at him.

“She has a broken wing, and her pride has been damaged severely.” He looks around “By the way, is there anything similar to a civilization nearby. I sense some life energy ahead.” Rainbow Dash hopped down as his good mood has now been ruined.

“Buck that! Do you really think I’m gonna let a freak like you anywhere near my town? Well, you're dead wrong male!” He walked towards her, and promptly flicked her forehead, sending her to the ground. She was unconscious. He also checked her pulse to confirm that.

“Is she alright?!” Fluttershy asked as he nodded.

“Well, can we proceed to your town?”

Author's Note

Marcus' Power Level

Base:75,000,000
SSJ:3,710,000,000
SSJ2:7,200,000,000
SSJ3:30,000,000,000

(Hope I got this right!)