This is the team I'll using to the Isle of Armor! Lemme introduce them:

Uno the Raboot
Got that name because he was the first shiny I've breed. Knows the egg moves Super Fang and High Jump Kick from his father, my starter. Transfered via Home to a rented copy of Shield which I've set a new journey alongside with Dos, just the two of them. And just the two of them managed to defeat Leon and become champions.
The only reason why he is not fully evolved is because I already have two Cinderace (the starter and the Libero one) and I don't like the shiny colors of that stage.

Dos the Decidueye
The second hatched shiny, just one day younger than Uno. For some reason everytime I set the camp they bicker each the other. Their teamwork is THAT questionable.

Saix the Umbreon
This Umbreon was originally a shiny Eevee given via trade by a follower on Twitter. I've always wanted a shiny Umbreon. And to name him Saix. Because why not.
He's not a knucklehead like the others two since he seems to be way older. (the data says he's from Kalos so yeah that makes quite a few years)