Episode 3

Overview

Image Gallery

Episode 3
Information
Kanji	執念の科学者
Rōmaji	Shūnen no Kagakusha
Japan Air Date	October 18, 2015
English Air Date	July 30, 2016
Chapters	9, 10, 11
Arc	House of Evolution Arc
Opening	The Hero
Ending	Hoshi Yori Saki ni Mitsukete Ageru
Episode Credits
Director	Yosuke Hatta
Screenplay	Satoshihiro Suzuki
Storyboard	Shingo Natsume, Yosuke Hatta
Animation Director	Yu Ishibashi
Episode Chronology
← Previous	Episode 2
Next →	Episode 4

"The Obsessive Scientist" is the third episode of the One-Punch Man anime series.

Summary

The narration describes the story of Dr. Genus, a brilliant young scientist with ideas of artificially evolving humanity who became disillusioned with the world, eventually discovering the secret to immortality and creating multiple clones of himself.

Dr. Genus in his youth

Saitama interrupts the narration out of impatience, prompting Armored Gorilla to explain that Dr. Genus is interested in Saitama's constitution (or, as he puts it, his body). Misunderstanding the intent, Saitama initially believes the scientist is homosexual until Genos clarifies that Genus wants Saitama for his experiments. With the store discount day approaching, Saitama and Genos decide to act quickly. Before they leave, Genos inquires with Armored Gorilla about any cyborgs who may have destroyed towns four years ago, but Armored Gorilla denies any knowledge. In preparation for Saitama's arrival, the House of Evolution sets traps throughout their facility and reluctantly decides to release Carnage Kabuto. Upon their arrival, Genos obliterates the above-ground facility with a single blast before heading underground. Carnage Kabuto then engages Genos, sustaining no damage during their battle. When Saitama faces Carnage Kabuto, the latter hesitates upon sensing Saitama's strength. Saitama then shares his daily training routine of 100 push-ups, 100 sit-ups, 100 squats, and a 10 km run, leaving Genos in disbelief.

Saitama defeating Carnage Kabuto

As Carnage Kabuto turns Carnage Mode and appears to gain the upper hand, it becomes clear that Saitama is merely surprised to realize the store discount day is that day rather than the next. He easily defeats Carnage Kabuto and departs with Genos to take advantage of the remaining discounts. Witnessing this, Dr. Genus abandons his ambitions of artificial evolution, realizing that he himself must change. After the credits, officials from the Hero Association inspect the site of the House of Evolution blast and discuss Genos' destructive capabilities.

Characters in Order of Appearance

1. Dr. Genus
2. Armored Gorilla
3. Saitama
4. Genos
5. Carnage Kabuto
6. Jinzuren
7. Busho

Manga and Anime Differences

• Armored Gorilla didn't explain that the motivation behind Genus' plans was the pain/hatred he felt from the imperfection of humans. This monologue is done by Genus later when he goes to watch Carnage Kabuto fight Saitama.
• Genos did not mention the rumors he's heard about the House of Evolution in the anime.
• In the anime, it's revealed what traps were set by Genus in the House of Evolution building: a Maze Room on the first floor, a Water Room on the second floor, a Fire Room on the third floor, a Blizzard Room on the fourth floor, an Electricity Room on the fifth floor, a "Neecle" Room (likely a misspelling of "Needle") on the sixth floor, a Vacuum Room on the seventh floor, and a Gravity Room on the eighth floor.
• The dismembered bodies of Genus' clones were not shown in the anime.
• In the anime Genus seemed more desperate when asking Carnage Kabuto to get Saitama's body than it appeared in the manga.
• In the anime, Genos did not mention that many lifeforms he sensed in the base were the same, or guess that they were clones.
• In the anime, Genos charged at Carnage Kabuto and kicked him, then circled him while blasting fire at him before doing Machine Gun Blows. In the manga, Genos sprinted right at Carnage Kabuto to use Machine Gun Blows.
• Carnage Kabuto jumped back from Saitama in the manga. He flew back with beetle wings in the anime.
• Genus did not introduce himself to Saitama before he explained how he got this strong, in the manga.
• Carnage Kabuto still has a shocked/nervous expression when thinking "what kind of training" in the anime. In the manga, his expression is much more serious and focused.
• Carnage Kabuto vs. Saitama is extended in the anime.
• In the manga, Genos never talked to Genus afterwards, Saitama and Genos didn't leave to try to make it to the sale in time, and Genus' very shocked expression was right after Carnage Kabuto got beat.
• The Hero Association was never shown to check the destroyed House of Evolution base in the manga.

Trivia

• Carnage Kabuto gives the post-credits episode monologue.

The sunset is seen

• After Saitama punches a hole to escape the combat experimentation room, a sunset is visible, even though they are supposed to be underground.
  • Prior to this, Genos informs Saitama that the sale lasts until 10:00 PM, noting they have about four hours left and that they can still make it if they hurry. This detail, combined with the sunset, suggests it is around sunset time immediately following Carnage Kabuto's defeat.