===In the Pokémon Diamond & Pearl Adventure! manga===
In this manga Dialga is more prominent than Palkia or Giratina. For [[Hareta]], one of the goals of his journey is to meet Dialga. Dialga also is the one summoned by Cyrus at the Spear Pillar. After Hareta stopped him, Palkia appeared.
Later, Hareta battles with Giratina in the [[Distortion World]].