Walk: Area Zero
Its base catch rate is 45 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Quick Ball or Moon Ball.
Evolution: Dunsparce → Dudunsparce (Know Hyper Drill).
Dudunsparce in every game · Pokémon Scarlet & Violet interactive map (Paldea)