SSM Internet's first release into the Vocaloid franchise came in the lull between the Kagamine Twins and Megurine Luka of Crypton.  Gackpoid, otherwise known as Kamui Gakupo, was a departure from the normal usage of Japanese voice actors to make Vocaloid samplings.  Instead, SSM Internet contracted international J-Pop sensation, Gackt, to do the project.  Gackt's well-exercised range is exhibited in the product.  He wears a traditional Japanese outfit, and is a self-proclaimed samurai, carrying a rainbow-colored murasame blade that somehow functions as an instrument.  He's known for his love of eggplants, and in canon, tends to ride on a giant eggplant that functions like a horse.

Originally, Gakupo was not welcome in the Vocaloid community, seen as a rival to the powerful frontrunner of Crypton.  Many videos were made making fun of Gakupo and his "imperfect" voice sampling.  It wasn't until some users took a risk and created some hilarious compositions that remained on the charts, was he accepted.  Dancing Samurai and Turkish March: Owata! were just two of note.

Gakupo has evolved from his original box art to a bit more of a comical persona.  Once Megurine Luka was released, canon had created a love-hate relationship between the two characters, Gakupo finding her as his ideal woman, while she found him as a threat and rival to her success.