Similar to Black Cerberus, however considerably weaker. Deal with this enemy by waiting for it's 3 consecutive attacks before using a lunge attack or running/dashing behind him for a stun attack.
Note: If you cut off the wrong arm on the Black Cerberus boss and received everything except the arm pieces. There is a Cerberus enemy at the end of the executive forum that also wears Black Cerberus armor. Recognizeable by his similar look to the boss, and Bloodhound robot. Both guarding the exit to the Nucleus area.