Fights someone about as strong as him with infinite stamina for an extended period of time

"Come on, then. Face me like a man," Vegeta smugly said as he stared down the cocky Number 17.

"Oh, I will," the cyborg replied confidently.

17 kicked off the ground effortlessly, launching himself 30 feet into the air. The wind rippled through his long black hair and he raised his hands above him, charging a red sphere of energy. Strangely enough, the attack emitted no ki signature, yet it was clearly both real and powerful.

"Try this out, Vegeta!" 17 smoothly said.

He hurled the blast straight down, the prince of Saiyans smiling below as he bent his knees in anticipation. Vegeta then swung his left arm at the blast, fingers fully extended, and swatted the attack away with a simple backhand.

POW! Just as the prince finished deflecting the attack he was hit hard in the face by the android's first punch. The surprised Saiyan was knocked onto his back and skidded about ten feet, but quickly hopped back up.

"Shrewd," said the prince as he rubbed his cheek.

"Hah, you haven't seen anything yet," retorted 17.

The cyborg flew directly at Vegeta this time, his right elbow ready to hit the prince in the jaw. But the prince anticipated and countered with a forearm block. The two fighters were suddenly locked against one another, pushing at the other to try and knock them off balance. To the android's surprise, Vegeta seemed to be holding his own quite well.

"Hey, not bad, Vegeta," he said with a note of real interest.

The Super Saiyan then twisted his feet, spinning with his back to the android and causing 17 to stumble forwards. Then, with his continued momentum, Vegeta landed a hard kick into the cyborg's lower back. This time it was the cyborg who was knocked to the ground, skidding face first through the dirt for several yards.

"Woah," observed android 18. "Vegeta's quite a bit stronger than Doctor Gero's data indicated. Is this what you were warning me of, 16?" the blonde beauty said, turning to the silent titan beside her. "Look, he may be stronger than the data said, but I could still crush him. And 17's only toying around. I don't see what the big deal is."

The giant, however, did not respond. He merely watched, closely following each strike. After 17 had gotten up, Vegeta charged him again, but the android ducked and then vanished. Chasing him through the air, the prince's golden aura zipped from spot to spot in a zigzagging trail of yellow. What made his opponent particularly difficult to follow, though, wasn't his speed, but the fact that he had no energy signature to follow. Each time he nearly caught his opponent, 17 dodged at the last second—smiling with the amusement of a child.

"You're pretty spry for a guy made of spare toaster parts," said the prince.

"Big talk, Vegeta. Did you think of that all by yourself?"

Rather than angrily lashing back, the prince began to laugh. He couldn't believe how blindly this android had been convinced that he was superior. He, himself, would have probably felt the same way had it not been for King Cold making an appearance on Earth several years before. Seeing the true power of Frieza's father had been a harsh awakening for the prince—especially since he had always been led to believe that the legendary Super Saiyan was the most powerful being in the universe. After he had fulfilled the prophecy, he honestly believed that he would never be challenged again…yet strong foes kept appearing one after another to undermine that belief. As hard as it was to admit, being a Super Saiyan didn't make him invincible. As a result, he was no longer the overconfident fool he used to be. Though confident, he was also cautious.

"What's the matter, Vegeta. No more of your clever retorts?"

"Hahaha, You fools don't get it, do you? You're so certain that your strength is superior that you aren't even paying attention."

"What are you talking about? I'm the strongest there is. You don't honestly think you're a match for me?"

"That's exactly what I'm saying, android. If you weren't so busy bragging on yourself I think you'd have noticed it by now."

Vegeta suddenly vanished, appearing behind 17 and swinging his arm into a hard chop on the side of the cyborg's neck. With a snapping crunch, 17 lurched over in surprised pain. Unlike the others, he and his sister were once human; they could feel. 17 braced himself against the rocky ground, rolling over and trying to avoid a stomp from the prince's boot. He barely dodged as Vegeta struck at him, but was unable to make it to his feet as the prince chased him relentlessly.

'Why am I running from him?' the cyborg angrily thought. 'This shouldn't be happening!'

17 grit his teeth and turned, welcoming Vegeta's head on assault. Yet even bracing himself didn't prepare him for the ferocity of the prince's incoming attacks. Vegeta rammed his fist into 17's gut, stomped on his foot, then caught him in the jaw with a hard backhand. As 17 fell backwards, Vegeta swept his legs, preventing the android from bracing himself. Then, the prince jumped and dug both his legs into 17's torso, driving him deep into the rocky ground. Lifting gracefully into the air above, the prince smiled as he looked down into the fresh crater.

"Well, well. What do you have to say now, machine?" he yelled.

The blue jean-wearing cyborg was slow getting up, but within a few seconds he had risen to his feet. Silently, he was gazing up at the prince in contemplation.

'This isn't going at all like I expected. At first it was exciting that Vegeta was much stronger than expected, but each time I raise my speed and strength he matches me as if it's nothing. Still, he's only an organic being. He'll tire out eventually, but not me—I can do this all day long.'

"Hey, 17, are you all right?" his sister yelled. She hadn't been worried until just moments before. Their last bout had been faster than she was capable of moving, and though she knew that 17 could handle more than her she was still concerned. "Listen, let's just take him on together!"

"No way, 18," her brother replied, still somehow maintaining his composed smoothness. "Vegeta is mine. Nobody treats me like this and gets away with it!"

"But—" her protest was suddenly interrupted by a hard kick to the side of her head. She flew directly into the crater and crashed on top of her brother.

"I've got dibs on that one, father."

...

Simultaneously, 17 charged Vegeta and 18 charged Trunks.

"I'll teach you to blind-side me, boy!" Number 18 swung hard at Trunks' face, but the Super Saiyan reached up his hand and caught it. Twisting her wrist hard to the right, he bent the beautiful cyborg over and kicked her hard in the face. She caught herself against the ground, looking up angrily at her foe. Uncertain of what to do next, she took off, Trunks pursuing her.

Android 17 had been more tactical in his approach. "Time to get serious!" he shouted. Quickly he delivered a right palm to Vegeta's face then with his left hand swung a hard blow to the prince's stomach. With the prince in shock, he reached around and elbowed him in the upper back just below the neck. Then, as Vegeta toppled forwards, he reverse sweep-kicked him higher up into the air. Dashing after him, 17 readied an even harder double fist, raised above his head.

Just in the nick of time, Vegeta's ki exploded around him and he accelerated rather than reversing. At his top speed he was staying ahead of the pursuing cyborg. Best of all, he was in perfect position. Spinning his body around in midflight to face 17, Vegeta put his right hand out and fired.

"Big Bang Attack!" The intense ball of blue energy shot out of the prince's palm with extreme speed. 17's eyes bulged wide as he realized his mistake, quickly throwing up his arms to block—there was barely time to react as he flew full speed into the attack.

PHOOM! The explosion was deafening. The shockwaves from the blast were so intense that the other two who were doing battle were both thrown backwards. Then, from the debris cloud, the dark and hazy form of the cyborg started to fall. Crashing with a light thud, his body kicked up a small cloud of dust.

...

"Come on, android. Pick yourself up, you're a disgrace." Vegeta laughed as he waited on 17 to stand. He was sure he was winning, as he had only taken a few minor hits, but the android strangely seemed to be just as fresh as always. Luckily, while the two seemed about equal in speed, he definitely had an advantage in strength.

Standing and brushing dirt from his shirt with two pats, 17 smirked up at Vegeta. "You honestly think you're winning, don't you? Maybe this time you're the one who should be paying attention. Haven't you noticed yet? My power is infinite—I never tire out. But you, you can't keep this up forever. Face it, Vegeta, you're through."

...

The prince twisted his left boot from side to side, digging it into the dirt to brace his footing ever so slightly. He then flared out his golden aura, increasing its width around his body by several inches and causing it to pulsate even faster than normal. Forming in his own two hands were two spheres of golden light, which glowed so brightly they grabbed the attention of both Trunks and android 18.

"Let's finish this, android." Vegeta grunted, his tensed muscles causing his voice to be much more like a growl.

"PHOTON FLASH!" 17 yelled as his yellow energy wave blasted out from his hand. It was narrow, its densely compacted power deadly.

"FINAL FLASH!" the prince released the power of his strongest beam, which now took considerably less time to charge than when he had used it against Cold several years prior.

The two golden beams met in the center with an enormous clap of thunder and suddenly began to shake the entire area. A large yellow ball of power was coalescing in the middle as the excess energy from the beams shot both up, down, and around the sides trying to circumvent the other's blast and reach the intended target.

...

VRUUUUM, sounded the constant rumbling of the two clashing beams.

"Is that all the power you have, android? Surely, if you have limitless energy, you can keep this up indefinitely, right?" the prince goaded as he forced more of his stored energy into the final flash—the resulting impact edging the blast wave closer and closer to 17's position.

"As a matter of fact, Vegeta..." number 17 began to get strangely excited. "…I can!" The cyborg unexpectedly added his left hand to the blast as his supposedly infinite power began to pour forth from it as well—doubling the golden beam's intensity while maintaining the same size.

The concentrated, limitless power of the cyborg's energy beam suddenly pierced through the front of Vegeta's Final Flash. Golden light filled the prince's vision as he stared into the blast like headlights zooming towards him on a dark road. Gritting his teeth, he instinctively created a wall of ki at his feet and sprang to his left. The beam disintegrated his shoulder guard and tore away his cape completely.

- Bringer of Death Chapter 38

"Wait!" 18 shouted. "Please, stop! I'm innocent, I swear!" Her eyes could no longer bear to face the Super Saiyan. She looked about frantically, searching for some way of escape. She caught her brother's eye briefly and her heart rose, but it sank suddenly as Vegeta's elbow smashed into the teenager's face, knocking him to the ground. '16?!' she thought, desperately hoping he would intervene. But the silent giant was motionless, his gaze fixed somewhere far-off. He seemed oblivious to the threat before him.

...

"18!" her brother cried, fear showing in his voice as well. Why was this Trunks so intent on punishing his older sister for things she hadn't done? Did the Super Saiyan think she deserved his wrath merely for what she was? He moved to help her, but a kick from Vegeta sent him flying in the other direction, unable to intervene.

...

"Wow, he saved her!" murmured 17 as he watched in awe. He turned just in time to see Vegeta's attack coming, but he dodged below it. Grabbing the prince's arm, the cyborg spun in midair and pulled, spinning him in a circle. With all his strength, 17 hurled Vegeta into the ground. But the prince flipped over and braced himself before impact in order to minimize damage. Though the Saiyan was slowly tiring, he was still very much a threat.

- Bringer of Death Chapter 39