Pokemon: I Transmigrated Twice

I am Stephen, assistant to Vegapunk. After transmigrated to the One Piece world and failing in the attempt to take down Imu in collaboration with the Revolutionary Army, I unexpectedly found myself transmigrated again, this time to the Pokémon world. Although my body has become smaller, my mind remains as sharp as ever. My current identity is: The Chief Pokémon Professor of the Pokémon League A mind 500 years ahead of its time Executive Vice-Leader of Team Rocket The second Master-level Trainer after Professor Rowan The benefactor recognized by Rayquaza as its successor Honorary Chairman of the Alola League Supreme Commander of Dark Pokémon! — Description from novelcodex.org