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A character introduced in Pokémon Sword and Shield's The Isle of Armor DLC. Mustard is the Master of the Master Dojo. He is a former Fighting-type Gym Leader, former Galar Champion, and Leon's mentor. He is married to Honey and they have a son, Hyde.
Trainers who clear his trials receive a Kubfu.
Pokémon
- Mienfoo → Mienshao
- Shinx → Luxray
- Corviknight
- Lycanroc (Midday)
- Kommo-o
- Kubfu → Urshifu ↔ Gigantamax Urshifu (style opposite to the player's choice)