Pikachu's mentality of not evolving should be the same as Bulbasaur's attitude of suppressing evolution. If he has not evolved, he can still learn powerful skills through his own efforts. Pikachu is a self-respecting spirit. So far, after being defeated by Raichu twice, some people have recommended the road of evolution, but Pikachu has severely rejected it. He hopes that through his own efforts, he will become stronger together with Xiao Zhi's efforts and defeat his opponents together. It is with this belief that Pikachu became more powerful in the form of evolution.

Generally, the evolved elves will become bigger and gain weight. After Pikachu's amnesia was cheated away by the rocket, Pikachu jumped on Kojiro's shoulder, and Kojiro complained that Pikachu was "so heavy". Since Pikachu has weight, isn't Raichu heavier, and Xiao Zhi will have a hard time.

Pikachu is cute, but Raichu is not so popular. In order to increase popularity, the company will not let Pikachu evolve. The intimacy between Xiao Zhi and Pikachu is as high as 99.8%, which is an enviable figure.

Since the first episode, Pikachu's extraordinary performance has aroused the rocket's pursuit of him. The villain's rocket VS Pikachu is cute and cute, and Pikachu's image is deeply rooted in people's hearts. If one day Pikachu evolves, with the understanding that Pikachu did not evolve before the rocket, maybe other Pikachu will be caught. Isn't that hopeless?