nikki sixx has had several spouses including courtney sixx (2014), donna d'errico (1996-2007), and brandi brandt (1989-1996). he has four children storm brieanne sixx, gunner nicholas sixx, decker nilsson sixx, frankie-jean sixx. many people believe sixx was only in the popular band motley crue. he was also affiliated with six(x ha g e t it) (sixx:a.m., london, brides of destruction, sister, and 58).