Eero's expression became strange looking at the Z warriors, Gohan and Cell battle doubtfully, 'What is happening here? is this some circus show? Cell is a showman and all these Z warriors became circus animal's.'
Also, Gohan watched these maniacal Cell Jr.'s heartlessly beat his friends and family, he became enraged, but it was still not enough.
Perfect Cell, noticing Gohan's anger, ordered the Cell Juniors to kill everyone. At this point, Hercule discovered the head of Android 16 which, surprisingly, could still talk.
Android 16 pleaded with Hercule to take him near Gohan, throw him if he had to, for the sake of the world. Hercule complied despite his fear, and the Android's head landed between Gohan and Cell.
Android 16 gave some advice and words of encouragement to Gohan, saying it was okay to fight sometimes to defend loved ones and to protect the world he loved.
Perfect Cell, overhearing this, claimed that this was good advice and promptly crushed Android 16's head beneath his foot. This was the boiling point when Gohan snapped.
This enraged Gohan to his very limits and pushed him to a new level, Super Saiyan 2, the Super Saiyan level ascended beyond a Super Saiyan.
Eero patted his forehead annoyingly. 'I am tired of this. His loved ones and family were abused, he didn't snap, but a metal android head was crushed in front of him, he snapped. What kind of pathetic reason is this, and I am watching it for the third time.'
Perfect Cell was pleased when Gohan reached this form, but Gohan's first action was mercilessly taking down the smaller Cell Juniors, which he defeated in a single hit each. The already astounded Z Warriors, with the exception of Goku, were amazed as Gohan and Perfect Cell began to battle, with Gohan dominating the powerful Android.
Even after Cell powered up to maximum, which surprised everyone, who all thought Cell was at full power when he fought Goku.
Cell punched Gohan hard in the face. Gohan was barely fazed at all. With just two punches, Gohan almost incapacitated Cell completely.
Perfect Cell truly learned fear when Gohan began dodging all of his attacks, taunting him, and overpowering even his strongest Kamehameha at point-blank range.
This almost destroyed Cell, but Gohan decided to let Cell suffer for a while, which made Goku order Gohan to kill Cell. But it was too late. Cell regenerated using Piccolo's Cells.
Making the same mistake Future Trunks made earlier, he began a transformation that reduced his speed drastically, making him unable to hit Gohan. After Gohan had had enough of dodging Cell's punches, he kicked Cell in the face and then in the stomach.
The kick to the stomach was hard enough to make Cell regurgitate Android 18, which made him revert to his Semi-Perfect form.
Enraged, Semi-Perfect Cell threatened to destroy the whole planet and began to self-destruct.
Goku decided to step in because if he did not, Semi-Perfect Cell would have killed himself, destroying the planet with him.
Goku used the Instant Transmission to reach Semi-Perfect Cell and then transmitted them both to King Kai's Planet, which was subsequently destroyed along with Goku, Semi-Perfect Cell, King Kai, Bubbles, and Gregory.
The Z Warriors were in anguish over what had transpired and knew Goku took his life for the rest of the planet. But to their surprise, a strong wind began to blow, and a tremendously powerful force came upon them. Cell was back! A single Death Beam by Cell impaled Future Trunks and killed him.
He came back in his "Perfect" Form due to the fact that his cells stored the memory of his perfect form, and he was exponentially stronger than before because his core remained unharmed, and from it he had regenerated.
He had become a lot stronger thanks to the Saiyan cells inside him, which after a near-death experience, increased his power dramatically. This power increase brought Cell up to a form he calls "Ultimate Perfection."
Eero raised his eyebrow, looking at the dark black aura condensing above Cell's body. 'It's more than previous Frieza, Vegeta, and Raditz. It seems I will gain more experience here.'
Eero's eyes lit up, started paying attention to the next development.
The previously distraught Gohan was, in fact, pleased to see Super Perfect Cell had returned and hoped to avenge his father.
Vegeta, seeing his own son get killed by Super Perfect Cell, became stunned, but this soon turned into anger as he went into a berserk rage against Super Perfect Cell.
Despite everyone telling him that Future Trunks could be revived by the Dragon Balls, Vegeta, who went Super Saiyan, attacked Super Perfect Cell mercilessly and attacked him with an array of energy blasts.
It was absolutely hopeless, however, as Super Perfect Cell gave one hit to Vegeta that knocked him out and almost killed him.
He was about to kill Vegeta off with a ki blast, but Gohan intercepted the blast with his own arm. It became badly damaged and hung limply at his side.
Vegeta, in a rare moment, actually apologized to Gohan. Super Perfect Cell jumped back and prepared for an attack.
Super Perfect Cell fired his Solar Kamehameha at Gohan, which is stated by himself to have enough energy to destroy the entire solar system that they reside in.
After losing use of one of his arms and seeing how much stronger Cell was now, Gohan seemingly lost all hope of destroying Super Perfect Cell and gave up, until he heard Goku communicating to him from the Other World via King Kai.
Eero shrouded Cell and his solar Kamehameha, felt the attack contain evil energy reduced its time and kinetic force.
Goku encouraged Gohan to believe in his power, and with newfound hope, Gohan prepared a one-handed Kamehameha.
Since Gohan had used up a lot of energy and only used one arm, which had been injured by Super Perfect Cell's blast, for a Kamehameha, he was at a disadvantage.
This, coupled with the fact that Super Perfect Cell was equal to or greater than Gohan when he first turned into a Super Saiyan 2 in power, seemed to bring Gohan down all the more.
The battle between the Kamehameha waves proved intense.