Pokemon Go Sinnoh Celebration event: Shiny Riolu and Hippopotas released - Dexerto

The Pokemon Go Sinnoh Celebration event brings back an array of Gen 4 Pokemon including shiny Riolu and Hippopotas.

Sinnoh Region Celebration Event Guide: Tasks, Rewards, Shiny Pokémon

Pokemon Go Sinnoh Celebration Event Guide

Pokemon Go Sinnoh Celebration Shiny Riolu Will not be Available in the Wild

Sinnoh Celebration - Pokémon GO

Pokemon Go Sinnoh Region Celebration Event Start and end date, Shiny encounters, and more - GameRevolution

Sinnoh Region Celebration - Leek Duck

Pokemon Go's Sinnoh Region Celebration Event, Featuring Shiny Riolu and Hippopotas - Gamepur

Sinnoh Region Celebration - Leek Duck

Pokémon Go's Halloween event introduces Sinnoh legendary - Polygon

Sinnoh Celebration Event

Sinnoh Region Celebration - Leek Duck