The Rosy Life Riders were once known as the Flying Fish Riders. They are lead by Duval and used to kidnap pirates to sell on the slave trade. Now just normal bandits on call to "Black Leg" Sanji of the Straw Hat Pirates whenever they need assistance.
An unique squad of tough bandits who ride upon the backs of giant flying fish originally as members of the Flying Fish Riders under the leadership of Duval, the now-peaceful Rosy Life Riders follow Duval as they give aid to the Straw Hat Pirates during the Caimie Kidnapping Crisis in the Sabaody Archipelago Arc.
The Rosy Life Riders were originally created by Eiichiro Oda for use in the One Piece manga, and it is not fully known as to what inspired their creation. The Rosy Life Riders first appeared in both One Piece: Volume 50 and in One Piece #386.