  We consider a new physics possibility at the colliders: the observation of
TeV scale massive vector bosons in the non-adjoint representations under the
Standard Model (SM) gauge symmetry. To have a unitary and renormalizable
theory, we propose a class of models with gauge symmetry $\prod_i G_i \times
SU(3)'_C \times SU(2)'_L \times U(1)'_Y$ where the SM fermions and Higgs fields
are singlets under the hidden gauge symmetry $\prod_i G_i$, and such massive
vector bosons appear after the gauge symmetry is spontaneously broken down to
the SM gauge symmetry. We discuss the model with SU(5) hidden gauge symmetry in
detail, and comment on the generic phenomenological implications.
