Magikarp’s Nature does not directly matter since it’s rather likely that it will be swap-trained or be given an EXP Share to evolve into Gyarados. However, Pokemon retain their Nature through ...

Poor Magikarp. At best, tolerated as a necessary step in obtaining a Gyarados. At worst, the unwanted refuse of the Pokémon kingdom. While the leviathan that Magikarp eventually evolves to is alluring ...