Vaccine Man

Vaccine Man (ワクチンマン, Wakuchin Man) was a Mysterious Being supposedly born from the release of excessive pollution and waste generated by the industries made by human beings. According to him, he was created as an incarnation of nature's wrath who is tasked to wipe out humanity and thus effectively "vaccinate" the earth against future "infections."

Appearance
Vaccine Man is a large, purple hairless humanoid with two rounded antennae on his head. He has a bare muscular body, but Vaccine Man has demonstrated he is capable of shapeshifting, once transforming into a more complex form armed with large claws and fangs.

Personality
Acting as the anti-villain antagonist, Vaccine Man set out to extinguish humanity for the sake of his interpretation on the status of the environment being poor, as humans are considered to him to be an "infection" that withers the environment to a polluted, tainted mess of machinery and carcasses of organisms. The thought of opposition enrages him for he believes he acts out the wishes of planet Earth.

History
Vaccine Man was supposedly created as a response to the industrial reign over nature. Conceived by nature, in his own words, he has been formed to serve as the apostle of Mother Earth and under the wishes of such. He believes the Earth as a single living organism that is in need of protection and relief of pain, so Vaccine Man has set out to carry out the deed in extinguishing humanity so nature can prosper completely once more. To do this, he has tasked himself to attack the areas where humans are known to live in an infrastructure of technology and artificial order.

Introduction Saga
Vaccine Man appears next to A-City, creating a crater as a result of his travels. He conceives multiple balls of energy that cause further destruction to the city. Lightning Max and Smile Man were sent after Vaccine Man but are defeated easily. He then notices a crying schoolgirl and proceeds to try to grab and crush her. She is saved by Saitama, whom Vaccine Man questions regarding the hero's identity. Saitama says that he is just an average hero doing average hero things as a hobby.

Offended at Saitama's casual attitude, Vaccine Man launches into a diatribe about his name and purpose while transforming into his second form. Saitama quickly defeats him in a single punch, the staple of the latter's heroic deeds for the rest of the series. Credit for defeating him ultimately went to King, who was passing by and accidentally tripped onto Vaccine Man’s remains.

Abilities and Powers
Vaccine Man is a creature of great strength and size, enough so to be classed a threat level of "Dragon." He can destroy a large part of a big city and defeat 31 heroes by himself on the same day (indicating great stamina), though Saitama quickly defeated him. He was also said to be perhaps the greatest mysterious being that appeared to this point in time.

Supernatural Abilities
Energy Balls (エネルギー弾, Enerugī-dan): He can shoot energy balls which cause large-scale explosions upon cities. His energy balls are said to be the accumulation of "biological" energy present naturally in Earth.

Flight (飛行能力, Hikō nōryoku): Vaccine Man's supernatural powers also extend to flight. When he does he is surrounded by an aura that's similar to his energy balls and takes off several feet in the air.

Physical Abilities
Transformation (変身, Henshin): Vaccine Man is shown to morph his hand into a larger spiky form when he was about to crush the schoolgirl. Vaccine Man is also shown to transform into a more advanced form, bearing claws, teeth, a darker coloration, solid luminescent red eyes, and visible scales and spikes. The extent of this form's power is unknown, as Vaccine Man was killed by Saitama after adopting it. He can mutate only specific parts of his body to preserve energy.

Quotes

 * (To Saitama): "What kind of ridiculous backstory is that?! I exist because of humankind's constant pollution of the environment! I am VACCINE MAN! The Earth is a single living organism! And you humans are the disease-causing germs killing it! The will of the Earth gave birth to me so that I may destroy humanity and their insidious civilization! But you do this for fun?! That's the reason you dare to oppose me, the Earth's apostle!? Then indeed I must wipe humankind from existence!"

Trivia

 * Vaccine Man's normal form bears a strong resemblance to the character Piccolo from the popular manga series Dragon Ball. Coincidentally, the character happened to share the same English voice actor, Christopher Sabat and the same German voice actor, David Nathan.


 * Vaccine Man happens to be a parody of the character Baikinman, the primary antagonist of Anpanman. Given that One Punch Man is a reference to Anpanman, Vaccine Man shares the same Japanese voice actor as Baikinman, Ryusei Nakao.
 * Nakao himself is also known for voicing Frieza in the Dragon Ball series (DBZ and DBS).
 * Murata stated that the energy balls he uses are the same as Choze and Homeless Emperor.
 * Vaccine Man is stronger than Gouketsu but weaker than Golden Sperm.

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