The official Pokémon GO blog confirmed a limited-time celebration for Professor Willow's birthday on July 21, 2026, featuring a new costumed Pikachu assistant.
Developers announced a one-day event including Timed Research and Field Research tasks that reward players with special items and encounters with a unique costumed Pikachu.
This marks a rare opportunity for players to obtain a specific costumed variant of Pikachu that may include team-specific backgrounds.
The information comes directly from the official Pokémon GO news blog.
Start with the primary evidence, then review supporting sources and context.
“Updates Wish Professor Willow a very happy birthday with Professor Willow’s assistant Pikachu! Willow’s Birthday Research Tuesday, July 21, 2026, from 10:00 a.m. to 8:00 p.m. local”
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