  We investigate mass deformation of twisted superalgebra of U(N) super
Yang-Mills (SYM) theories in several models and in several dimensions,
motivated by the method formulated in [1]. We show that there are several ways
to perform the deformation, if a model possesses four scalar supercharges
except for two dimensional B-model. We also evaluate classical vacuum solutions
of the potentials of scalar fields for each model. We then find that it is
always possible to find fuzzy sphere solution in the theories.
