Attention, Trainers! Morpeko will be ineligible for use in all Pokémon GO Championship Series events until further notice. This includes the 2025 Gdańsk Regionals this weekend and at League events following this announcement. Morpeko was just added to Pokémon GO on October 22nd, 2024 with the Halloween 2024 Part I event. It was announced during the closing ceremonies of the 2024 Pokémon World Championships.

Play! Pokémon Pokémon GO Championship Series Banned Pokémon List

Per the Pokémon GO Tournament Rules Handbook, Pokémon and attacks become eligible for use in tournament play at 00:00 UTC on the Tuesday following their release. A player may only include newly released Pokémon or attacks on their team if team registration closes after the newly released Pokémon or attacks become eligible. In some cases, an existing attack may be updated or modified in the game before or during a tournament. In instances where an attack is updated and is already known by a Pokémon, that attack in its new state is available immediately for a Pokémon that already had that attack in its attack pool.

Trainers planning to take part in Play! Pokémon competitive Pokémon GO tournaments will not be allowed to utilize the following Pokémon until advised otherwise.

• Morpeko
• Skiddo
• Gogoat
• Muk with the Fast Attack Acid
• Koffing with the Fast Attack Acid
• Weezing with the Fast Attack Acid
• Chansey with the Charged Attack Psybeam
• Staryu with the Fast Attack Quick Attack
• Starmie with the Fast Attack Quick Attack
• Porygon with the Fast Attack Quick Attack
• Pichu with the Fast Attack Quick Attack

Source: https://www.pokemon.com/us/play-pokemon/about/play-pokemon-pokemon-go-championship-series-banned-pokemon-list