WordNet sense 1 (having two poles):

bipolar

WordNet sense 2 (marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another):

two-faced

WordNet sense 3 (deceptive or fraudulent; disposed to cheat or defraud or deceive):

dishonest, dishonorable

WordNet sense 4 (having a face or facing especially of a specified kind or number; often used in combination):

faced