Throughout the Buddy Up event, you’re more likely to find Pokemon like Alolan Meowth, Chansey, Eevee, Feebas, Lillipup, and Joltik in the wild and in eggs. The Gen 5 Pokemon Woobat, which was previously available as February’s Research Breakthrough reward, will also appear in the wild for the first time, and you can receive special event-exclusive Field Research tasks from PokeStops.
In addition to the aforementioned Pokemon, the Buddy Up event also brings out Volbeat and Illumise. This is notable because each of these monsters is normally exclusive to certain regions; Volbeat can typically only be found in Europe, Asia, and Oceania, while Illumise only appears in the Americas and Africa. Throughout the Buddy Up event, however, both Pokemon will be available around the world, and if you’re lucky enough, you’ll be able to encounter their Shiny forms.