Edwin Murray is an intelligent and clever person, as shown through his ability to create the Mimic and the Mimic1 code through random machine parts and code scattered throughout the factory. However, he's also shown to be quick to anger and aggression, even towards his own son at some points. Despite this, Edwin did care for David and loved him. When Edwin has his mind set on something, he'll work non-stop to achieve his goals.

Mr. Helpful is a joyous Carnival Announcer, he was created using Edwin's voice, which is why they're under the same audition.