Question: what are the best pokemon to use against team rocket?
Answer: Persian is normal type, so go heavy on Fighting: Machamp, Lucario, Blaziken or someone like that. Sandlsash is pure ground-type, so Water or Grass will handle it well: Kyogre, Venasaur, Gyarados and Swampert would all work. And for Mewtwo, your best best against a Psychic-type is a Dark-type or Ghost-type.