  Localization and mass spectrum of bosonic and fermionic matter fields of some
novel families of asymmetric thick brane configurations generated by deformed
defects are investigated. The localization profiles of spin 0, spin 1/2 and
spin 1 bulk fields are identified for novel matter field potentials supported
by thick branes with internal structures. The condition for localization is
constrained by the brane thickness of each model such that thickest branes
strongly induces matter localization. The bulk mass terms for both fermion and
boson fields are included in the global action as to produce some imprints on
mass-independent potentials of the Kaluza-Klein modes associated to the
corresponding Schr\"odinger equations. In particular, for spin 1/2 fermions, a
complete analytical profile of localization is obtained for the four classes of
superpotentials here discussed. Regarding the localization of fermion fields,
our overall conclusion indicates that thick branes produce a left-right
asymmetric chiral localization of spin 1/2 particles.
