Rattata-Alola @ Life Orb
EVs: 228 Atk / 76 SpD / 180 Spe
- Sucker Punch
- Zen Headbutt
It doesn't have the best of Attack stats, so it really needs Hustle and a Life Orb in order to punch holes in things. Sucker Punch is STAB priority. It works better than Crunch, as it has just 10 BP less and gives Rattata a means of employing priority. Facade is because it doesn't get many other Normal moves, and it works well even when statused. U-turn lets you pivot and keep momentum. Zen Headbutt nails Fighting types that hit Rattata 4x effectively.
It's not the best Pokemon, you should use something else if you can.