Gallade
1. Base 518, he and Gardevoir are the only Pokémon to have that specific BST
2. Steadfast, hidden ability Justified, they added Sharpness in Gen 9 acquired from a Trace Kirlia along with adding Sacred Sword & Aqua Cutter to his moveset
3. Fairy, Flying, and Ghost
If you can’t answer these questions, you’re a Pokemon LARPER