  We determine the holographic spectra of scalar mesons from the fluctuations
of the embedding of flavor D-brane probes in HQCD models. The models we
consider include a generalization of the Sakai Sugimoto model at zero
temperature and at the "high-temperature intermediate phase", where the system
is in a deconfining phase while admitting chiral symmetry breaking and a
non-critical 6d model at zero temperature. All these models are based on
backgrounds associated with near extremal N_c D4 branes and a set of N_f<<N_c
flavor probe branes that admit geometrical chiral symmetry breaking. We point
out that the spectra of these models include a 0^{--} branch which does not
show up in nature.
  At zero temperature we found that the masses of the mesons M_n depend on the
"constituent quark mass" parameter m^c_q and on the excitation number n as
M_n^2 m^c_q and M^2_n n^{1.7} for the ten dimensional case and as M_n m^c_q and
M_n n^{0.75} in the non-critical case. At the high temperature intermediate
phase we detect a decrease of the masses of low spin mesons as a function of
the temperature similar to holographic vector mesons and to lattice
calculations.
