Pikachu Buddy System Easter Egg
Another hidden Easter egg within Pokemon GO can be found by using the buddy System. And, of course, it deals with pikachu once again. Much like how Pikachu really did not care for Ash Ketchum in the Anime Series at first, so the same will be with your trainer when you select it as your Buddy Pokémon (shown by it standing on the ground). But after walking a total of over ten kilometers with Pikachu, your buddy will grow quite fond of you and will make your shoulder its new home. Now you too can be like Ash!