Ash and Paul begin their Full Battle.
The disguises used by Team Rocket in this episode are the same that were used in Gardie and Kojiro (1998), which first aired in Japan exactly eleven years before the debut Japanese airing of this episode.
Ash and his friends reach Lake Acuity.
When Ash, Dawn, and Brock arrive at Lake Acuity, there is no snow by the lake despite it being surrounded by snow in the games and in May and Zoey's flashbacks in Pruning a Passel of Pals! (2008).
This is the first time Pikachu was chosen to battle Paul since Rival Battle! Three vs. Three!! (2006). This is also the first time when Paul's Electabuzz uses a new move since its debut in that same episode.