Zero Two (aka 02) is the giant floating eye who can destroy everything and cause much pain.
After returning from Hell, Zero's Soul visited Giygas. He gave Zero a new body and God-like status. Zero liked his new body and renamed himself.
First of all Zero Two murdered his killer Kirby. That was the most violent death everybody ever seen in ages. Even Chuck Norris was shocked for a 0.000000000001 seconds. Later he started kill random people.
Millions of guys died because of Zero Two. Thousands of them commited suicide because they was scared of him. Most of times Zero Two took over their mind and caused them to explode. Sometime he punches them in the face and face dies.
Most of times Zero Two has never seen or heard about these guys. They just were not in the place.
Zero Two looks like a big eye with wings and big halo. His eye is bleeding. The blood is so hot, so he even sometimes uses his blood to cause first degree burns on guys' bodies.