Which Pokémon guides Ditto in Pokémon Pokopia’s environmental investigation?

Professor Tangrowth guides Ditto in Pokémon Pokopia’s environmental investigation. This Tangrowth has taken responsibility for studying the damaged world and trying to understand why humans and Pokémon disappeared.

Ditto meets Professor Tangrowth after finding its trainer’s old Pokédex and taking a human-like form. Together, they investigate the abandoned landscape while restoring habitats so Pokémon can return. Tangrowth therefore serves as both a plot character and a source of context for the world’s mystery.

The name can be confused with the human professors who appear throughout the main Pokémon series, such as Professor Oak or Professor Kukui. Professor Tangrowth is a Pokémon character, not a human scientist. The title “Professor” describes Tangrowth’s investigative role in Pokopia.