  M2 branes probing T-brane backgrounds in M-theory with ADE surface
singularities perceive deformations on their worldvolume superpotentials by
monopole operators. The dynamics and moduli spaces of the resulting theories
can be studied using a dual description involving conventional superpotential
terms and (the dimensional reduction of) class S trinion theories. By using the
S-dual description of N=2 SU(N) SQCD with 2N flavors in four dimensions, we are
able to study T-branes corresponding to all minimal nilpotent orbits for the
whole ADE series. Our proposed dualities are supported by the match in squashed
sphere partition functions.
