Mega Man Legends, known as Rockman DASH (ロックマンDASH Rokkuman Dasshu) in Japan, is a series in the Mega Man franchise. The DASH acronym in the Japanese title stands for Digouter's Adventure Story in Halcyon Days. While the main series is well known for its 2D side-scrolling platformer gameplay with very little story, this series instead features 3D action-adventure gameplay and a robust story.
According to the sourcebook, Rockman Perfect Memories, the Legends series takes place thousands of years after the ZX series. By this time, the planet Earth is mostly ocean, leaving some islands left for civilization to prosper on. Based on in-game dialogue, the series takes place at least in the year 80XX.
The player controls MegaMan Volnutt, a teenage digger and archaeologist of sorts who searches underground ruins mainly for Quantum Refractors, which are the civilization's primary source of energy. He was found as a baby on Nino Island at the bottom of the closed-off Nino Ruins and was raised by Professor Barrel Caskett along with his granddaughter Roll Caskett.
Giving them trouble are the Bonnes, a group of pirates consisting of leader Teisel Bonne, his sister (though the booklet says daughter) Tron Bonne (who is also allegedly infatuated with Mega Man), their baby brother Bon Bonne who somehow can drive a large mechasuit (known primarily for his repeated line, "Babu!", which has become a catch phrase among the series' fans), and the 41 Servbots (one of which is only in The Misadventures of Tron Bonne). More trouble is given to Mega Man by the Reaverbots, the techno-organic semi-intelligent residents of the underground ruins who serve to protect its contents.