Which Pokémon leads the environmental research in Pokémon Pokopia?

Professor Tangrowth leads the environmental research in Pokémon Pokopia.

After Ditto awakens in the abandoned world, it encounters a Tangrowth known as Professor Tangrowth. This character has taken responsibility for studying the damaged environment and investigating why humans and Pokémon disappeared.

Professor Tangrowth is a distinctive spin on the professor figures common in Pokémon stories. Traditional Pokémon games usually introduce human researchers such as Professor Oak or Professor Rowan. Pokopia instead gives that role to a Pokémon.

Tangrowth’s presence also fits the game’s ecological focus. The story is concerned with habitats, plant growth, environmental recovery, and the conditions needed for Pokémon to return. Professor Tangrowth therefore functions as both a plot guide and a symbol of the world’s natural recovery.