It’s the most wonderful time of year again, and by that I mean the amazing new shiny Pokémon that come out during Niantic’s Halloween Event for Pokémon GO. This year’s festivities stretch a full two weeks, from today to October 31. Each week is themed after different Halloween related Pokémon affairs, with the first week being “Creepy Companions” and the next, “Ghoulish Pals.” As is the custom for most POGO events, Niantic is highlighting the bond we share with our Pocket Monsters and the good times associated with the season.

While there are plenty of Pokémon to be excited about catching this season, we’re going to break down the many new and returning shinies that have a chance to appear throughout the event. From various research tasks and raids, to wild encounters, the new assortment of Halloween themed shiny Pokémon are a must for POGO collectors.

New Themed Shiny Pokémon

Each POGO event brings with it the chance to encounter new shiny themed Pokémon, and this year is no different. Mischief Pikachu, Drifblim, and Piplup all have a chance to spawn as a shiny version, with costumed Pikachu and Piplup available in the wild during both weeks, and costumed Drifblim in three-star raids starting week two.

Along with costumed Pokémon spawning throughout the event, Spinarak’s shiny variant will finally be released, with a chance to encounter it in the wild during the first week and in 7km eggs across both weeks.

Other key features and bonuses of the event include the following, via POGO‘s official announcement:

Other notable shiny Pokémon spawning in the wild, through research tasks, in raids, and hatching in eggs are Zubat, Drowzee, Gastly, Misdreavus, Shuppet, Woobat, Yamask, Murkrow, Alolan Raichu, Sableye, Altered Forme Giratina, Mega Gengar, and Absol.

Pokemon GO’s Halloween Mischief event goes from Friday, October 15 at 10:00 a.m. to Sunday, October 31 at 8:00 p.m. local time.