Ash did not evolve his Snivy in Pokémon Black & White primarily because the anime writers intended to highlight that unevolved Pokémon can still be powerful, emphasizing bond and training over raw evolutionary strength. Snivy maintained a "smart/mature" persona, was already quite strong, and acted as a contrast to other team members.
Snivy evolves into Servine when Ash and company are storming the Gringy City power plant to stop the rogue Poison Heart Bloodliner.
Because they evolve through alternative methods. Even if it wasn't a choice, evolution was shown as not necessary, and Pokemon can be shown to be stronger then their evolved forms, as Pikachu, Buizel, Snivy, and Pignite all showed.
When it came to Ash, that decision was denied, because Rowlet wanted to evolve too. Rowlet was just too attached to that Everstone , using it for Bullet Seed & all, to even care what an Everstone WAS, let alone realize that it's the reason why he's not evolving. Just too much of a Naive Nature.
After Ash's Unova adventure was over, Snivy was released among with Pignite, Scraggy, Oshawott and Charizard in Professor Oak's laboratory in the episode The Dream Continues! after Ash's Bulbasaur releases its Solar Beam in a shining multiple of sparkles to gain attention of other Ash's Unova Pokémon such as Unfezant, ...
Ash's rarest Pokémon are widely considered to be Melmetal (a Mythical Pokémon formed from a group of rare Meltan) and Naganadel (an Ultra Beast), alongside his unique Shiny Noctowl and the special Ash-Greninja form, as these possess traits (Mythical status, Ultra Beast origin, shiny coloring, unique battle phenomenon) making them exceptionally hard to find or replicate.
On 16th December 1997, more than 700 Japanese people have seizures and hospitalized after they watched Pokémon anime episode 38 called "Denno Senshi Porygon" which is that banned episode of pokemon in worldwide after the episode aired once in Japan and it caused seizures and photosensitive epilepsy.
The theory goes that Squirtle and Bulbasaur refuse to evolve due to how Charmander changed in personality. The three used to be very close before Charizard fully evolved. Granted after a while they did become close again but the time that Charizard had an attitude was a long while.
Because Ash's Gible is his very first Dragon type Pokemon that he caught and never gotten a chanced to evolved just like the rest of his other Dragon type Pokemon which really sucks.
The reason why Corphish never evolved was because Dark type Pokemon were still new and they felt like giving as a Dark type Pokemon to a protagonist wasn't a good idea (dark types in Japan are called evil type).
Squirtle makes a brief cameo in Alola, Kanto!, where Rotom Pokédex is taking pictures with its Squad while in a fire-fighting uniform. This indicates that Squirtle is now residing at Professor Oak's lab along with its Squad and its best friend Bulbasaur, who serves as a peacemaker at the lab.
Galarian Farfetch'd has very specific evolution requirements. While holding a leek (not large leek) get 3 critical hits in a single battle. Then he will evolve after the battle is won.
During the battle, Cyndaquil evolves into Quilava, and uses its newly learned Eruption move to send Team Rocket blasting off a second time. As the opening ceremonies begin, Ash notices that Nando, Barry, and Conway are all competing—as well as Paul.
While the officials who created Victini have never officially stated why Victini was placed at the beginning of the Unova dex, there are plenty of theories. It was given its special place because the officials thought it would be good luck to have it at the beginning of the dex.
Bulbasaur didn't want to evolve because he had pride in himself and didn't want to be forced to evolve (that's why he resisted despite being pressured by the Ivysaur and Venusaur). He believes he's strong and refuses to change.
Ash's rarest Pokémon are widely considered to be Melmetal (a Mythical Pokémon formed from a group of rare Meltan) and Naganadel (an Ultra Beast), alongside his unique Shiny Noctowl and the special Ash-Greninja form, as these possess traits (Mythical status, Ultra Beast origin, shiny coloring, unique battle phenomenon) making them exceptionally hard to find or replicate.
Piplup has been shown that he deeply cares about Dawn, such as in the episode Stopped in the Name of Love! where Piplup's time for evolution has finally come. However, Piplup refused to evolve and has reasons for not wanting to.
While training with Ash in the woods for an upcoming battle Rowlet accidentally swallows an Everstone, which prevents Pokémon from evolving.
May makes a comeback in Sinnoh saga revealing her new Pokémon and discovers that Bulbasaur evolved twice during her trainer's journey in Johto. Venusaur was now seen fighting a Trainer's Marill during the Wallace Cup.
Pikachu. It's so obvious that it probably doesn't need to be said, but Pikachu is and always will be the best friend Ash ever had. No matter how great the challenge, we always knew Ash wouldn't be alone because his partner Pokémon would be at his side.
Unfortunately, Charmander's happy personality and loyalty disappeared upon it evolving into Charmeleon, the reason being that Charmeleon's own skill level excelled that of Ash's and as such, it disrespected him.
The Pi-Kahuna (なみのりピカチュウのでんせつ [Notes 1], Naminori Pikachu no Densetsu?, lit. The Legend of the Surfing Pikachu) is the 69th episode of Pocket Monsters (1997 series), the 66th episode of Pokémon: Indigo League of Pokémon the Series: The Beginning, and the 14th episode of the second season of Pokémon the Series.
Name. The original full name of the franchise is Pocket Monsters (ポケットモンスター, Poketto Monsutā), which has been commonly abbreviated to Pokemon (ポケモン) since its launch.
The globally banned episode "Dennō Senshi Porygon", which aired only once on Japan's TV Tokyo on December 16, 1997, features a series of rapidly alternating red and blue frames that provoked epileptic seizures in hundreds of children.