Tinkmaster is the name of the Tinkaton character who uses tools to help rebuild the landscape in Pokémon Pokopia. The character’s role matches the game’s emphasis on construction, repair, and the practical work of restoring habitats.
Tinkmaster is one of Pokopia’s specially characterized Pokémon. Instead of appearing only as a battle participant, this Tinkaton is connected to the world’s reconstruction effort and has adapted to use various tools. That detail helps show how the game reinterprets familiar Pokémon abilities and traits for a social-simulation setting.
Tinkmaster should not be confused with Tinkaton’s standard species name or with a generic nickname a player might invent. The answer is the specific character name used in the game’s story. Tinkaton itself is a Fairy/Steel-type Pokémon introduced in Generation IX, while Tinkmaster is Pokopia’s tool-using individual.