"Magikarp Uses Splash!"
As an obvious fan favorite for its powerful attacks, Magikarp seemed like an easy choice for Sakurai. Due to time constraints, Magikarp could not be added to Brawl, where it would replace Pikachu. Sakurai decided that the way to please the most fans would be to add them both. In SSB4, Sakurai pleases both Pikachu and Magikarp fans.