Galarian Weezing is a regional variant Pokémon, which were first introduced in Pokémon Sun and Moon with the Alolan Region. Regional variant Pokémon use a similar base model but have a different appearance and different typing than their base counterparts. In this case, Galarian Weezing is Poison and Fairy type.
New avatar items based on clothes from Pokémon Sword and Shield have also been added to Pokémon GO.
In addition to Galarian Weezing, Pokémon GO is hosting several events throughout November.
The Supereffective Week runs through next Tuesday, Nov. 26. During the week you’ll find more Pokémon who are particularly effective against Team Rocket. You will also earn double the Stardust from Trainer Battles and receive more potions and revives from PokéStops.
The following week, from Nov. 27 through Dec. 2, is the Friend Fest event. During that week, you will encounter more family-themed Pokémon in the wild, such as Nidoran and Nidorano. You’ll also gain an attack boost when raiding with friends, and get a 50% stardust discount on trading Pokémon with friends.
Finally, Terrakion, the Legendary Cavern Pokémon will be added to Pokémon GO later this month. Beginning Nov. 26, Terrakion will begin appearing in five-star raids, through Dec. 17.