Now that you have reached Hulbury, you are ready to return to the Isle of Armor for Mustard's third and final trial. Meet up with Mustard in the TV room in the Dojo to the right, and he will declare the third, ultimate, final trial, which is a showdown between you and Klara/Avery for the "secret armor" of the dojo, now that both of you are the sole people who have passed the past two trials.
Once you are ready, head out to the Battle Court in the back. You will have one final showdown with Klara or Avery, but note that they will cheat: Klara will set up two layers of Toxic Spikes on your side of the field to badly poison your team, while Avery will set up Psychic Terrain immediately. Regardless, you will likely be declared the victor if you manage to defeat them. Their main Pokémon is a Galarian Slowbro, which they will Dynamax upon sending out. You can utilize Dynamax yourself in this battle, as this is a Power Spot.
After defeating Klara or Avery, you will be asked to wait until Mustard prepares the "secret armor". Talk with Mustard again, and this will prompt a cutscene in which he reveals the "secret armor" is in fact a Pokémon-Kubfu! After a brief cutscene introducing Kubfu, you will be asked to take Kubfu on your journey. This Pokémon is Level 10. From here, it is strongly encouraged that you carry it around and raise it along with the rest of your team throughout the main story.
Pokémon
Games
Location
Levels
Rate
Gift Pokémon After clearing all of Mustard's trials
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
From here, return to mainland Galar and continue the main story.
