In demonology, Amdusias (also Amduscias or Amdukias) has under his control twenty-nine legions. Even though he may appear as a human when evoked, his true form is that of a unicorn. He is accompanied by the sound of trumpets when he comes and will give concerts if commanded, even though no instruments can be seen. Trees bow to his will.
He is mentioned as a Duke in Johann Weyer’s Pseudomonarchis daemonum (1583).