Raichu is an Electric-type Pokémon from Generation I And the older brother of Pikachu and Pichu. It evolves from Pikachu when given a Thunder Stone after evolving from Pichu when leveling up to max happiness. Raichu has an alternate form in the Alola region which is part Psychic-typed.
Physiology
Raichu is a rodent-like Pokémon, similar to its previous evolution forms. Unlike Pichu or Pikachu, which have yellow fur, Raichu has orange-brown fur. It has long ears and feet, but has stubby arms with no noticeable fingers.
Anime
Electric Shock Showdown
Raichu made its debut appearance in the episode Electric Shock Showdown, under the ownership of Lt. Surge, the Gym Leader in Vermilion City. In this episode Ash's Pikachu is defeated in a one-on-one battle with Lt. Surge's Raichu, which then leads to Surge commenting on how Ash could never defeat his Raichu because his Pikachu was too weak.
Ash and Pikachu both, refusing to go through with evolving Pikachu in order to increase its power, face off against Lt. Surge again, this time using speed rather than power. By tiring Raichu out, Pikachu defeats Raichu and wins the battle. Raichu showed good sportsmanship as Surge handed Ash his Thunder Badge.
