What made Shadow evil?

What made Shadow evil? The antihero is created using the DNA of an evil alien race that wants to rule the whole universe. Sometimes, Shadow shows up as a villain whose hatred for humanity turns him into a menace to all humankind. Other times, Shadow is a powerful weapon against invading alien threats.

The antihero is created using the DNA of an evil alien race that wants to rule the whole universe. Sometimes, Shadow shows up as a villain whose hatred for humanity turns him into a menace to all humankind. Other times, Shadow is a powerful weapon against invading alien threats.
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