This article is about an episode of the Pokémon anime that has not been dubbed into English. As such, its coverage may contain romanized Japanese names, rather than dub names.
The Mother of All Battlers! (Japanese: ヒカリVSママ!親子対決!!Hikari VS Mama! Parent-Child Showdown!!) is the 138th episode of the Diamond & Pearl series, and the 604th episode of the Pokémon anime. It first aired in Japan on August 13, 2009 and will air in the United States on January 2, 2010.
Spoiler warning: this article may contain major plot or ending details.