If you’re particularly lucky, it can be found in the rare shiny variant after a successful battle. The ‘Nightmare Pokémon’ is a strong counter to many legendary monsters, making it an attractive raid target itself year after year when it returns for spooky season. Darkrai debuted in Pokémon GO two years ago during its Halloween event and has enjoyed great popularity among trainers ever since: the Dark-type creature is a true legend slayer.