During the Sinjoh Ruins event, in which Arceus creates a Lv. 1 Dialga, Palkia, or Giratina, a magic circle appears beneath it during the corresponding cutscene, remaining in place for most of the sequence. The layout of this circle is identical to a chart that Game Freak co-founder and prominent series staffer Junichi Masuda created during the development of Pokémon Diamond and Pearl in 2005, detailing the lineage of numerous Legendary Pokémon from the first four generations. This chart did not become publicly available until it was included in the Teraleak, a large-scale leak of internal server data from Game Freak in 2024.