In the title copper(II) complex, the metal atom is coordinated by two N atoms and two O atoms from two bidentate (E)-1-[(2,4,6-tribromophenyl)diazenyl]naphthalen-2-ol ligands, forming a slightly distorted square-planar environment. In the isotypic nickel(II) and palladium(II) complexes, the metal atoms are located on centres of inversion, hence the metal coordination spheres have perfect square-planar geometries.