• English / United States: Assumpta's Ivysaur
• Japanese / Japan: サユリのフシギソウ
• Japanese (Romanized) / Japan: Sayuri no Fushigisou
• Japanese (TL) / Japan: Sayuri's Fushigisou

Ivysaur was the final Pokémon that Assumpta sent out to battle against Ritchie during her battle with him at the Pokémon Leauge. Ivysaur was able to defeat Ritchie's Pikachu to allow Assumpta to advance to the next round.

Kanto Pokémon League - Round Six - Vs Ritchie

Both trainers were down to their last Pokémon and it was Ritchie's Pikachu versus Assumpta's Ivysaur. Ivysaur quickly charged at Pikachu who just managed to avoid the attack, however, Ivysaur used Vine Whip which swept Pikachu off of its feet. Ivysaur charged again at Pikachu who tried to halt its progress with a Thundershock but Ivysaur either dodged the attack or defended itself with its vines. Ivysaur then launched itself in the air and launched a Solarbeam attack followed by a tackle attack which Pikachu could not recover from and eliminated Ritchie from the competition and putting Assumpta into the Semi-Finals.