Which Pokémon does Pokémon Pokopia call Professor Tangrowth?

Tangrowth is the Pokémon called Professor Tangrowth in Pokémon Pokopia.

Professor Tangrowth is a character who studies the damaged environment and investigates why humans and Pokémon disappeared. The name combines the character's academic role with the species identity of Tangrowth, making it a distinctive figure in the game's story.

The character meets Ditto after Ditto finds an old Pokédex and takes on a human-like form. Professor Tangrowth then helps direct the effort to restore habitats and make the abandoned landscape suitable for Pokémon again.

Tangrowth is a Grass-type Pokémon introduced in Generation IV, but Pokopia uses it in a role unlike a conventional battle opponent or gym character. Its scientific persona supports the game's environmental mystery and gives the player context for the restoration work.