Like Surge, Raichu was arrogant and very sure of its own strength, considering it to be Ash's Pikachu superior rival simply because it was its evolved form. During their first battle, Raichu electrocuted Pikachu with Thunder Shock. Pikachu tried to retaliate, but was hit by Raichu's Mega Punch and Mega Kick and also got defeated by Thunder Shock. However, during their second battle, Raichu hit Pikachu with its tail, followed by Body Slam. Just as Pikachu was about to get defeated, Raichu was overwhelmed by his superior speed; because it had evolved so quickly it never learned Quick Attack or Agility, which were two of the moves Pikachu used to dodge and attack Raichu. Raichu tried using Thunderbolt, which crashed all the windows. Pikachu dodged the move by standing on its tail. Since Raichu used up all its electricity, it intercept Pikachu's Quick Attack with Take Down. However, the latter was quicker and overpowered the former. With a shocking tail, Pikachu defeated Raichu. After its defeat, Raichu grew to respect Pikachu.
While running away from his Pikachu, to have it stay with the other Pikachu and be happy with others of its kin, Ash recalled how Pikachu fought against Surge's Raichu.
- Urara Takano (Japanese and English)