Jessie and James are notorious members of Team Rocket from the Pokémon animated show. They continually attempt to steal Pikachu from Ash Ketchum, among all the other Pokémon that get in their way. Although they have tried many times, they consistently fail and are not found to be the worst people in the world. With the upcoming Team Rocket Balloon event on Pokémon Go, could these two characters find their way into the game? New text datamined by Pokeminers suggests this could be happening.
The full text was pushed to Reddit by a member of the Pokeminers team where you can read the full text. While Jessie and James don't have a direct dialogue, some of Team Go Rocket Balloon's grunts refer to asking trainers if they've seen a pair of weirdos, one with blue hair and the other with magenta hair. . Considering the amount of Niantic developers who have been pushing the balloons for Team Rocket, these dialogue clues are unlikely to be just references and likely lean to make these two appear as a one-off encounter.
When they will show up remains a mystery. At the sound of the leaked dialogue, Jessie and Jamies could be on the run from Team Rocket and attempting to engage in their own nefarious activities. They could have special Shadow Pokémon attached to them that players can save, or they could be related to an event we don't know about. We'll know when the Team Rocket balloon growls hit Pokémon Go and engage players in the dialogue. None of the leaked dialogues mention a talking Meow, but the Furry Mate could likely make an appearance alongside these two, even if it's just a Pokémon they use in battle.