"Worse than Team Skull, I'm afraid," answered Shiranui as Okami felt proud of her accomplishment, "Team Rocket is a criminal organisation based in Kanto that steals other people's Pokémon and uses them for their own nefarious ends. Liam and I put a stop to their operations in Johto, but their boss Giovanni—formerly of the Viridian Gym—is still at large.
"Liam may be right, but the golden rule we abide by concerning Team Rocket is always take what they say with a grain of salt. Billie and Kidd may be vacationing, but they may also be a means for Team Rocket to take root in Alola; and I've heard on the Grepa Berry vine that they're not the only Rockets we need to watch out for around here."