From the Villains Wiki- Dr. Erich Nazo (Zero) is a cruel, evil German scientist who causes a great deal of
danger to the most of these around him. He has no tolerance for failure
and shows little to no sympathy to his army when they fail him and is
quick to lose his temper, going so far as to blasting them with his
laser eyes, although the one he shows sympathy towards the most is his
assistant
Gorgo and never killed him (who pleads to spare him multiple times).
Not only is he super cold-hearted, he also has absolutely no
regards to human life and don't hesitate to kill children. Showing no
signs of value for anyone but himself; he is also narcissistic and proud
of what he is and in-line with his scientific genius, he sees himself
superior towards everyone and belittles his minions and sees everyone
who works with him as absolutely nothing but tools to help him conquer
the world.
