Pokémon Go has released another mythical Pokémon. Here's how to navigate the Ripple in Time campaign to catch Celebi. Here's how to navigate the Ripple in Time campaign to catch Celebi. Pokémon Go has released another mythical Pokémon. Celebi is the Mythical Pokémon of Generation 2, first discovered in the Johto Region. In Pokémon Go, that's so far been limited to Pokémon Go Fest Chicago 2018, but it won't be long before Celebi is available to quest for around the world. I cannot catch celebi on my phone. AR mode has never worked on my phone (it shows the AR picture but no Pokemon will appear on it) for some unfathomable reason the game says you must catch celebi in AR mode. If I try to catch it without AR on, I get this weird image of celebi that is uncatchable and keeps disappearing and reappearing. Like the Generation 1 Mythical, Mew, encountering Celebi requires you to complete Special Research.