We construct fractional branes in Landau-Ginzburg orbifold categories
and study their behavior under marginal closed string perturbations.
This approach is shown to be more general than the rational
boundary state construction. In particular we find new D-branes on
the quintic -- such as a single D0-brane -- which are not restrictions
of bundles on the ambient projective space. We also exhibit a family
of deformations of the D0-brane in the Landau-Ginzburg category
parameterized by points on the Fermat quintic.