The gigolo was a hologram in Tom Paris' holodeck program depicting Chez Sandríne. The gigolo's father was French and his mother was Daliwakan.
He would not leave Ricky, another hologram, alone. He explained that that was what he does. He also tried to seduce Kathryn Janeway. He asked her what her favorite song was so he could play it and dance with her. He told her that he wished to make love to her. He also wanted to know if she had money. (VOY: "The Cloud")
Later he attempted to dance with Denara Pel in hopes of seducing her. The Doctor told him to leave. He remarked that the Doctor was jealous because he could not dance. (VOY: "Lifesigns")