Which Pokémon co-stars as “Professor” in Pokémon Pokopia’s story?

Tangrowth co-stars as Professor Tangrowth in Pokémon Pokopia’s story.

Professor Tangrowth is the form taken by a Tangrowth who studies the abandoned environment. The character meets Ditto after Ditto reaches the post-apocalyptic world and helps establish the story’s mystery: why humans and Pokémon disappeared and why the land became difficult to inhabit.

Tangrowth’s role connects the narrative with the game’s environmental themes. Rather than serving as a conventional battle rival or gym leader, Professor Tangrowth investigates the damaged world and works with Ditto to restore habitats. The title “Professor” is part of the character’s identity in the story, not the name of a human researcher from the main Pokémon series. This is why Tangrowth can be confused with familiar Pokémon professors such as Professor Oak or Professor Rowan. In Pokopia, the researcher is a Pokémon, and the character’s plant-like design fits the game’s emphasis on vegetation, habitats, and ecological recovery.