Exactly 40 episodes later, Gary appears in Sinnoh again. Coincidentally, during both of the times Gary has reappeared, Ash and his friends were on their way to Hearthome City.
This is one of the few episodes of the Diamond & Pearl series where Dawn's Piplup does not appear.
Ash and his friends encounter J again.
Ash and his friends meet up with Gary, with Dawn meeting him for the first time.
This is the first time Gary's Umbreon uses an offensive move that isn't Normal type, as well as the first time it uses a non-Normal-type of any kind since its debut in Satoshi vs Shigeru!! (1999), 395 episodes earlier.