The two combatants walked up to either side of the arena.
"In this corner, the beautiful blonde badass robo-fighter that only just learned how emotions work, Android 18!" 18 flew up, landing in the arena with her arms crossed.
"And in this corner, one of the G4 Pegasus ponies, aspiring Wonderbolt and scientifically proven to be faster than anyof them (seriously look it up), Rainbow Dash!" RRainbow flew up a bit higher than she needed to, landing with a confident grin.
"Alright ladies, just a refresher on the rules: the name of the game is making your opponent cum, preferably hard, by any means necessary. Weapons may be used, but only if they can be used for pleasure. Same goes for special abilities. Light combat is allowed in order to make the opponent submit, but with the exception of a combat/pain fetish, no intense battling is allowed. The winner advances to the next round, the loser is disqualified, and the loser spends one night as the winner's sex slave."
The two girls nodded, 18 looking over Rainbow to scan her for weak points, Rainbow puffing out her wings for applause.
"If the combatants are set," there was a pause, during which 18 help still, finishing her calculations, Rainbow turning to face 18, "begin!"
Dash immediately took off, flying at high speed at 18. 18 looked human, so she wouldn't be too big a problem. Just pin her and rub her down until she couldn't take it anymore. Piece of cake.
18 didn't move an inch as Dash flew at her, probably paralyzed in fear. Dash's jaw dropped when 18's hand shot out, catching Dash out of the sky effortlessly.
18 had scanned Dash and determined that her flight was 60 percent magical, 35 percent physical, and 5 mental. From there she was able to determine the top speed, angle and trajectory of Dash's movements, letting her grab the pegasus easily.
"W-what? How?" Dash questioned. 18 shrugged, "I was faster." She said, throwing Dash to the ground. Based on Dash's personality and physiology, 18 determined she most likely enjoyed it rough. She pinned Dash, biting her neck hard.
Dash moaned in spite of herself, yelping when 18 grabbed her wings. With all the magic and other energy flowing through the feathered appendages, 18 correctly assumed that they would be extremely sensitive to both pleasure and pain when directly focused on.
Dash tried to squirm, and even as strong as she was, couldn't possibly break 18's grip. 18 stroked Dash's wings, making her shiver and moan. Dash tried to focus on escaping, but her mind went blank when 18 bit her wing, leaving her incapable of any thought beyond, "more~"
"It seems Dash has lost herself in 18's grip! It's all over now!"
It was. 18 pinpointed her weak spots and handled them all so perfectly, that she only had to lightly rub her pussy to make her cum.
"And Rainbow Dash has reached climax! Android 18 is the victor!"
18 released Dash, who was panting, flustered, and all around humiliated. She was surprised to find 18 not gloating, but apologizing. "II'll be sure to make it up to you tonight." The android, who'd been trying to learn to be nicer, said with a polite bow.
Dash nodded, unable to hold a grudge for too long under the circumstances.
"It seems you can be as physically tuned as possible, but you'll still be putty to someone who knows which strings to pull! Next time its Raven vs Iris! Will the dragon master slay the teen titan? Or will the black magic witch bring down the trainer? Find out in the next round of Yuri Tournement!"