Co-written by SuperSaiyan2Link.
Upon his transformation's completion, Vegeta lunged at them, forcing Pan and Goku to flee from their massive foe. Neither knowing if they could even damage Vegeta at this point, they made their way through the canyon's structures only to find the Great Ape always keeping pace with them.
After using the Solar Flare to momentarily blind Vegeta, Goku fled, trying to gather energy for his Spirit Bomb. Pan attempted to defend Goku upon Vegeta finding them, but even her Kamehameha could only delay his approach. She stopped her attack to avoid draining herself completely, and flew around the Great Ape's head to hold his attention. While her ki blasts annoyed him far more, Vegeta kept to his intended path.
She finally stopped Vegeta by landing in front of him and extended the Power Pole, striking his chin and forcing him to back up. With a punting kick, he struck the Power Pole, knocking Pan to the side and sending her weapon so far out of range she couldn't hope to recover it and return in time. She tried getting up, but Vegeta's next step forced her into a stumble, leaving her open to a falling punch. Despite creating a shield of ki around herself, the impact shattered it and left her further exposed to a stomp.
Left injured in the crater the punch and stomp created, Pan could only watch as Great Ape Vegeta fired a beam from his mouth, finally reaching Goku. As she turned over onto her stomach, she witnessed Vegeta stomping on Goku's legs, then pointing to fire at him only to stop his attack. She couldn't hear the conversation between the two, but she did see Goku firing one last beam at the Great Ape's right eye. In retaliation, Vegeta grabbed hold of Goku and began squeezing him, during which Pan endured her grandfather's screams of pain.
Soon after, she saw Gohan arriving, followed by Krilling throwing a Destructo-Disk at Great Ape Vegeta's tail. As per history, Vegeta leapt over it, but as he taunted them, a purple aura took hold of him. Once it covered him, he instinctively turned around, avoiding Yajirobe's sword swing and knocking him away with his tail.
Pan, Trunks, and the Supreme Kai of Time watched as history began to change before their very eyes: Krillin flew after Yajirobe, and Gohan tried to attack Great Ape Vegeta to save Goku, but none of his attacks could do a thing to the Great Ape. Upon Krillin's returned, he joined in as well, about to fire off a Solar Flare, but Vegeta swat him into the distance with his freed hand. Gohan went into a rage and collided with Vegeta's chest, trying with all of his might to push him over, and, to Vegeta and Pan's surprise, actually forced the Great Ape to take one step backward.
Out of frustration, Vegeta swatted Gohan towards the ground with his freed hand, rolling close to Pan's crater. Vegeta looked over at Goku's two grounded allies, turned Goku towards Gohan, and taunted him over what would occur first: Goku being crushed in his hands, or him living long enough to see his son killed. Pan looked up and saw Vegeta's mouth beginning to glow, but then noticed Gohan trying to get her attention. Once he had it, even though Pan couldn't hear him, Gohan managed to mouth the words "You can do it", the same words she had told him in their battle against Raditz.
Redetermined by the words given to her from the child who would become her father, Pan floated off the ground, then charged with all the ki she could muster. Right as Great Ape Vegeta's charging mouth beam began to reach its apex, she flew between his legs and took hold of his tail, tugging with everything she had. As the beam finally fired, Vegeta saw it miss and felt himself being lifted off the ground by his tail. In spite of his power, the squeezing pressure on his tail combined with the pull off the ground left him unable to break out of it. For the first time, Vegeta felt an agonizing pain in his tail, so much so he let go of Goku, who landed close to his son.
Trunks and Supreme Kai of Time witnessed Pan flying higher into the air while lifting up Great Ape Vegeta, but also saw the strain on her body that she was powering through without even feeling. The two opened communications with Pan, telling her she had to stop what she was doing. At first, Pan didn't even respond, hellbent in the moment on getting Vegeta as high up as she could. Trunks insisted to Pan that both Gohan and Goku were alright and that it was time to let Vegeta go. Still receiving no response, both knew that if Pan kept this up, her body would break down completely and she would likely be killed.
Both tried to think of what to do then and there, to which Trunks mentioned Bulla, which gave Pan pause even with all her adrenaline and instincts raging through her. He told her to let Vegeta go, and that it's all for Bulla's sake. Both due to hearing Trunks' words and the strain finally registering, she descended, nearly throwing Vegeta downward. As she saw the Great Ape crash into the ground first, she mustered just enough ki to soften her landing before landing on her back. As Great Ape Vegeta struggled to even get on all fours, Yajirobe lunged at his tail, slicing it off with a single swing of his katana. Pan watched as Vegeta began to revert back to his self until she lost consciousness.
Seeing the battle wasn't over, Pima believed he had to cover for the unconscious Pan, but the three of them saw that despite the power-up Vegeta had been given, the pain from his tail in his Great Ape form prevented Vegeta from vastly overpowering the remaining Z-Fighters. They watched as it appeared history was restored back to its proper form.
Pan opened her eyes, seeing Krillin placing his hand on Goku's followed by the Spirit Bomb forming in the Earthling's palm. Her eyes closed, then reopened to see Gohan taking the fight to Vegeta, though ultimately not stopping the Saiyan Prince. Once more, she blacked out, then awoke to see Krillin's tossed Spirit Bomb missing Vegeta, but ultimately hitting its mark after Gohan deflected it back. She watched for as long as she could as the Saiyan Prince was forced into the sky out of her view until her vision went dark.
This time, when her eyes opened, Pan saw Yajirobe, who was helping her to sit up. He complimented her on her feat as Krillin and Gohan looked over at her happily, the battle finally won. Goku, while immobilized and unable to speak, looked her in the eye and somehow managed to communicate telepathically with her, giving Pan his thanks for saving his son on both occasions.
As she managed to make it onto her feet and stand, she nearly lost her footing as something came crashing to the ground: Vegeta, who quickly got off his back and knocked Krillin away with a simple swing. He then emitted a massive explosion, during which Pan shielded Gohan, but was soon sent flying backward along with him. While Vegeta sparred with Yajirobe, Pan noticed Gohan's tail, which was hidden throughout the entire battle, as well as the artificial moon Vegeta created to transform himself still shining down on them. Seeing Yajirobe being beaten savagely by the enraged Vegeta, she was told that Gohan transforming into a Great Ape was the key to their victory. Pan whispered for her father to forgive her for what she was going to do, and held Gohan in the moon's direction so he would see it clearly.
Within seconds, Gohan grew in size and Vegeta turned his full attention towards him after pushing Pan out of the way. In spite of attempting to kill Gohan before he could complete the transformation, the Great Ape took hold of him and tossed him into the distance. While Krillin at first celebrated this, the Great Ape smashing the area around him revealed that Gohan was not himself and more akin to a wild animal. Pan flew in front of the Great Ape, putting her hands on his face to try and calm him down. As Vegeta reemerged, she saw the Great Ape turn around and lunge high into the air towards the Saiyan Prince, unsure if what she attempted worked.
Vegeta, knowing he would be overpowered in a prolonged bout, tried to finish it quickly and threw a disk at Gohan's tail, successfully cutting it off. A burst of purple ki enveloped Vegeta and Pan, Trunks, and the Supreme Kai of Time had a feeling this was a last-ditch to ensure Vegeta avoided his fated defeat. Knowing that Vegeta couldn't be allowed to escape this, Pan flew into his view and fired a Kamehameha at him, which he descended to avoid. To his surprise, Pan bent the Kamehameha, which came downward after him, which she learned from watching Goku do the same against Raditz long before. The Saiyan Prince blocked it successfully, ready to taunt Pan until he saw himself too late to avoid the falling body of the shrinking, but still massive Great Ape.
In the aftermath, Vegeta crawled out from underneath the unconscious body of Gohan, truly unable to continue fighting and desperate to get to his pod. Krillin approached him, Yajirobe's sword in hand, about to stab Vegeta when he stopped. Pan saw Krillin turn towards Goku, indicating he was speaking to Krillin telepathically like he did for her. Krillin ranted about how Vegeta wasn't going to turn over a new leaf like Piccolo, and that he was completely irredeemable. Pan soon caught the purple aura around Krillin, whose eyes turned red as he declared he'd kill Vegeta no matter what Goku said.
She intervened, standing in Krillin's path and pleading with him not to do this. This did nothing to deter Krillin, who promised he'd do whatever it takes, even if it meant killing whoever tried to stop him. Knowing Krillin wasn't himself, Pan fought him, but with both so exhausted from the prolonged battles before, neither made any effort defensively. After receiving a cut to her cheek from the katana, she managed to disarm Krillin of the blade and struck him on the neck, knocking him out. Even with this, she saw Krillin getting back up slowly, almost akin to a puppet, and wondered what to do. Just then, Goku spoke to her telepathically, knowing that someone had to be possessing Krillin to do all this and informing her he detected a strange ki from far behind the pod itself.
Pan flew off quickly, wanting to get to the bottom of this before the possessed Krillin would finish the job, eventually finding a woman in red with a white hood and cape using a staff of some kind glowing with the same purple aura afflicting Krillin. She fired a ki blast, damaging the staff and freeing Krillin of its influence, then went for a punch when a massive man garbed in red, black, and white with blue skin stood in front of the woman, shielding her from the blow with his own body. Pan reeled afterward, her hand hurt just from the impact with him, allowing the man to gut punch her, hitting with a force greater than even Great Ape Vegeta. He put his hand in front of her face, about to fire off a point-blank blast Pan was in no position to avoid when the woman pulled his arm away from Pan, stating "That's enough, Mira". As she readied herself to depart, she looked over at Pan, telling her "Continue Chronoa's bidding for now, but you'll know better soon enough."
As she saw this woman and Mira vanish, Pan also saw the canyon disappear, replaced shortly by the Time Nest. Trunks and Pima both helped Pan upward as the Supreme Kai of Time told her after she flew after the source of Krillin's possession, Pan's communications went silent and they lost sight of her. Pan answered that the hooded woman was protected by a bodyguard named Mira, who stopped her with one punch, and that she referred to someone named Chronoa. After Pan asked who this was, the Supreme Kai of Time revealed Chronoa was her name and that only three people in the Time Patrol knew of it: Trunks, Commander Hale, and a former patroller named Towa.