Blue Pokémon with big smiles? It's Wooper and Quagsire! Starting August 19th, 2024, you'll have a chance to encounter Wooper and Quagsire through sleep research at Greengrass Isle, Cyan Beach, and Taupe Hollow in Pokémon Sleep.

New Arrivals: Wooper and Quagsire

There have been reports of Wooper and Quagsire appearing near certain areas—maybe this is thanks to the sleep research you’ve all been conducting! It may be possible to encounter them during sleep research sometime soon. We hope you’re looking forward to this!

Wooper and Quagsire Details

Appearing Beginning: August 19, 2024, at 3:00 p.m.
Note: Wooper Incense can be used starting from the date and time above.

Appearing at: Greengrass Isle, Cyan Beach, and Taupe Hollow
Sleep Types: Wooper: Slumbering, Quagsire: Slumbering

Source: https://www.pokemonsleep.net/en/news/313634393036303332353539303330323733/