Things are getting a little spooky in Pokémon GO's GO Battle League—from Monday, October 26, 2020, at 1:00 p.m. PDT to Tuesday, November 3, 2020, at 1:00 p.m. PST, players can take part in the Halloween Cup. In this format, you can bring only Poison-, Bug-, Ghost-, Dark-, or Fairy-type Pokémon with 1500 CP or less into battle. You'll want to bring the best of the best to this creepy competition, as competing will earn you reward encounters with special costumed Bulbasaur, Charmander, and Squirtle!
If you're just getting started in the GO Battle League, be sure to read our starters guide.
Have fun and good luck, Trainers!