During certain events, Charged TM could be used to change a Shadow Pokémon's Frustration to other Charged Attacks that that Pokémon could learn normally. Shadow Pokémon and their evolution can learn exclusive attacks in future events as long as they forget Frustration.
- Global take-over mini-event - March 7th, 2020, 2 p.m. to 5 p.m. (local time)
- Battle-themed event - July 12th, 2020, 11 a.m. to 2 p.m. (local time)
- Wooper Watch - December 10th, 2020, 4 p.m. to December 11th 2020, 4 p.m. (PST)
- Special Raid Challenge - February 28th, 2021, 11 a.m. to 2 p.m. (local time)
- First part of Luminous Legends Y - May 18th, 2021 10 a.m. to May 24th, 2021 8 p.m. (local time)
- NianticHelp. Trainers, if you use a TM on your Shadow Pokémon to forget Frustration during Saturday's Team GO Rocket take-over, your Pokémon will be able to evolve to learn exclusive attacks during future specified events!. Twitter. Retrieved on 2020-03-06.
- Stardust bonuses, Shadow Entei, Thundurus in raids, and more in March!. Pokémon GO Live. Retrieved on 2020-02-29.
- Team GO Rocket has taken over the GO Fest Weekly Challenge!. Pokémon GO Live. Retrieved on 2020-07-10.
- Let’s watch The Game Awards 2020 together!. Pokémon GO Live. Retrieved on 2020-12-10.
- Close out the Pokémon Day weekend with a Kanto-themed Raid Day!. Pokémon GO Live. Retrieved on 2021-02-18.
- Luminous Legends Y: Yveltal joins Xerneas in Pokémon GO—and Team GO Rocket wants in on the action!. Pokémon GO Live. Retrieved on 2021-05-10.
- article, on the Bulbapedia
- Frustration article, on the Pokémon Wiki