Raikou is an Electric-type Legendary Pokémon available in 5-star Raids.
It is trio-able for high-level Trainers with teams consisting of top Ground-type counters such as Groudon, Rhyperior, Excadrill, and Garchomp. Lower-level Trainers, or Trainers lacking proper counters, should Raid in larger groups (4-20) to take out the Thunder Pokémon.