Which Pokémon is the professor-like researcher in Pokémon Pokopia?

Tangrowth is the professor-like researcher in Pokémon Pokopia.

The character is known as Professor Tangrowth and studies the damaged environment in which the story begins. This Pokémon helps Ditto investigate the abandoned world and understand why its habitats became unsuitable for life.

Tangrowth is a Grass-type Pokémon introduced in Pokémon Diamond and Pearl. Its design is built around thick blue vines, making it an especially fitting character for a story about overgrown landscapes, ecological recovery, and restoring greenery.

Professor Tangrowth should not be confused with a human Pokémon professor such as Professor Oak or Professor Rowan. Pokopia places a Pokémon in the researcher role, reinforcing the game’s premise that Ditto and other Pokémon are rebuilding their world after humans have disappeared.