Pokémon: Mewtwo Strikes Back - Evolution

Mewtwo destroyed the laboratory after learning from Dr. Fuji that he was merely a cloned experiment created from Mew's DNA. Upon discovering he was viewed as a weapon and not a living being with intrinsic worth, Mewtwo was consumed by rage and unleashed his psychic powers, killing everyone inside including Dr. Fuji. This act represented Mewtwo's rejection of his creators and his initial belief that he had no genuine purpose or identity.

Mewtwo sought revenge because he believed humans viewed him as nothing more than an experiment and a tool for domination. After escaping Giovanni's influence, who tried to use him for world domination, Mewtwo concluded that humanity would never accept him as anything but a weapon. His revenge plot involved challenging trainers to demonstrate the power of clones and prove his superiority over the humans who created him.

Mewtwo was created by Dr. Fuji using his cloning expertise at Giovanni's request. Giovanni, leader of Team Rocket, tasked Dr. Fuji with creating a powerful weapon from a single eyelash of the legendary Pokémon Mew. Using Mew's DNA, Dr. Fuji successfully cloned Mewtwo, giving birth to a Pokémon with extraordinary psychic abilities including the power to cause floods and make flora flourish.

Ash became petrified when he selflessly placed himself between Mewtwo's psychic attack and Mew during their climactic battle. Rather than allowing Mew to be harmed, Ash took the full force of Mewtwo's powerful psychic blast intended for Mew, resulting in his body turning to stone. This act of bravery convinced Mewtwo that true worth comes from one's choices rather than one's origins.

Ash was revived by the tears of the Pokémon who witnessed his sacrifice. After Ash was petrified, Pikachu tried desperately to revive him using electrical powers but failed. However, when all the Pokémon, original and clone, gathered around Ash and wept for him, their collective tears broke the petrification spell, bringing Ash back to life.

Mewtwo erased the trainers' memories of the entire encounter because he wanted them to start fresh without the trauma of the battle or the burden of knowing about the clones. After understanding that his worth is defined by his choices rather than his origins, Mewtwo decided to leave with Mew and the cloned Pokémon. He reversed time to just before the trainers arrived at Old Shore Wharf and erased their memories so they could continue their journey without the weight of those events.

At the end, Mewtwo left New Island with Mew and the cloned Pokémon after learning that self-worth comes from one's choices, not origins. Inspired by Ash's selfless sacrifice, Mewtwo chose to abandon his revenge against humanity. He reversed time to before the trainers arrived and departed with Mew and the clones, flying toward Mount Quena, leaving the world to continue without the conflict he had planned.

Mewtwo battled Mew to prove his superiority despite being a clone. After Ash destroyed the cloning machine, Mew appeared, and Mewtwo engaged it in battle to demonstrate that his clones were not inferior to the originals. The battle was meant to settle the question of whether the clone or the original held greater power, with Mewtwo seeking validation for his own existence through this confrontation.

Mewtwo created cloned Pokémon to build an army and prove his superiority over humanity. By challenging trainers to battle and defeating them with superior clones, Mewtwo intended to demonstrate that he had transcended his status as a mere experiment. He also used the clones to expand his power, initially confiscating the trainers' Pokémon to add to his collection of cloned warriors.

Giovanni, the leader of Team Rocket, commissioned Dr. Fuji to create Mewtwo as a powerful weapon for world domination. After witnessing Mewtwo destroy the laboratory, Giovanni approached the newly awakened clone offering guidance and the promise of power in exchange for his allegiance. When Mewtwo realized he was being used as a pawn for Giovanni's ambitions, he escaped to plot his own revenge against humanity.

At the end of the movie, Team Rocket found themselves stranded on New Island after the events concluded. However, rather than showing distress, they seemed to relish the unexpected adventure, implying they would continue pursuing their usual schemes. Their subplot involving Mew leading them to the cloning machine was also erased when Mewtwo reversed time.