Ye10 • 19 minutes ago. Old Gateau · Mypka • 25 minutes ago. Martha · Rerker • 2 hours ago. Rare Candy · AcelJean • 6 hours ago. Help us grow Pokémon. Pikachu has two alternate forms: one, the Cosplay Pikachu, appeared in Pokémon . finally evolves?!, but he has since devolved back to the Pikachu stage. Raichu · III · Ash's Pikachu · Generation I learnset. Baby, Basic, Stage 1, Stage 2 These appear to become electrically charged during the night while Pikachu sleeps Lowers the target's Defense by one stage.