  We study the copointed Hopf algebras attached to the Nichols algebra of the
affine rack $\Aff(\F_4,\omega)$, also known as tetrahedron rack, and the
2-cocycle -1. We investigate the so-called Verma modules and classify all the
simple modules. We conclude that these algebras are of wild representation type
and not quasitriangular, also we analyze when these are spherical.
