Who is the Pokémon professor guiding Ditto in Pokémon Pokopia?

Professor Tangrowth guides Ditto in Pokémon Pokopia. This unusual character is a Tangrowth who has been living alone in the desolate area where humans and Pokémon once coexisted, and he appears to use human-made tools.

Ditto encounters Professor Tangrowth early in the rebuilding story. Together, they help turn withered land into a functioning settlement by attracting Pokémon, restoring habitats, and learning practical moves. The professor's identity continues the series' tradition of naming researchers after Pokémon while giving the game a distinctive mentor character.

Professor Tangrowth should not be confused with Professor Oak or other human professors from the main series. Tangrowth is itself a Pokémon, and the title “Professor” describes the character's role rather than a human occupation. That contrast is one of Pokopia's intentionally unusual details and helps establish its world, where Pokémon take on jobs and community responsibilities.