SM129: Battle Royal 151

- (大乱闘！バトルロイヤル151！！) is the 37th episode of Pokémon the Series: Sun & Moon - Ultra Legends.

Synopsis
Qualifier Battle Royale has begun. 151 pairs of Pokémon and trainers fought and 16 pairs survived. It is a survival match that can advance to the final tournament. Can Ash advance to the finals tournament while the strong players are competing?

Trivia

 * The Orange Islands opening, Type: Wild, replaces Notebook of the Heart for the rest of the Sun and Moon series.
 * The 151 pairs of Pokémon are a reference to the original number of Pokémon that appeared throughout the Generation I games.