What item does Ditto find early in Pokémon Pokopia?

Ditto finds an old Pokédex early in Pokémon Pokopia.

The old Pokédex is important because Ditto uses the memory associated with it to assume a human form based on its trainer. This discovery connects the playable Ditto to the absent human world and gives the story an emotional link between the abandoned landscape and the people who once lived there.

The item is more than a standard encyclopedia or inventory object. It acts as a clue about Ditto’s past and helps explain why the Pokémon can imitate a human appearance during the adventure. The Pokédex also reinforces the series’ long-running connection between exploration, observation, and recording Pokémon.

Players may confuse this object with the massive computer system described later in the plot. The old Pokédex is a personal relic found by Ditto, while the computer system was created to preserve Pokémon after humanity left Earth. They serve different narrative purposes.