That said, since Wano and the revelation of the Nika Fruit, One Piece has gone on to introduce even more broken devil fruits like Bonney's Age-Age Fruit, Loki's Nidhoggr Fruit, and Imu's ominous, unspecified ability simply dubbed The Devil's Fruit. The Gas-Gas Fruit is a Logia devil fruit eaten by Caesar Clown, Doctor Vegapunk's evil former partner who created the artificial devil fruits known as SMILEs. The Rumble-Rumble Fruit is an electricity-based Logia-type devil fruit that can deliver power output just as great as Kaido's devil fruit.