You don't have to wait until May 10th to see Pikachu come to life in new ways. Ahead of the long-awaited Pokémon movie, Google released Detective Pikachu, Charizard, Jigglypuff and Mr. Mime as Playmojis for the Pixel's Playground mode. As you can with Google's other Playmojis (previously called AR stickers), you can drop these characters into scenes around you and interact with them through the Pixel's cameras.
Source: Google Blog