Head Case's arm fully extends, pointing at the man's face. The blaster primes, and the hydraulics lock in place, causing the arm to emit a series of high pitch whines as a warning,
-YOU AND YOUR ALLIES WILL LAY YOUR WEAPONS ON THE GROUND AND THEY WILL COME FORTH SLOWLY WITH THEIR HANDS ABOVE THEIR HEADS- -YOU HAVE FIVE SECONDS TO COMPLY- -FIVE- -FOUR- -THREE- -TWO- -ONE-
If his orders aren't followed, or the man or his friends attack, Head case roasts him. Or not.