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Overgrown Rover (育ちすぎたポチ, Sodachisugita Pochi; Viz: Overgrown Pochi), also called Rover, is a Dragon-level Mysterious Being and an executive member of the Monster Association. Its role is to guard the Monster Association Headquarters.

Warning.png Expand to see original webcomic information. Beware of spoiler content.

After the Monster Association's downfall, he becomes Saitama's pet alongside Black Sperm and is currently entrusted to Forte, Chain'n'toad, and Butterfly DX.

Appearance[edit | edit source]

Rover is a very large, black, six-eyed dog monster. Its eyes are ruby colored. It has very large fangs and four toes per paw. Its fur is very shaggy and roughed up. It lacks a tongue, and has no visible ears or nose.

Warning.png Expand to see original webcomic information. Beware of spoiler content.

After the battle between the Hero Association and the Monster Association, Rover shrinks to the size of a puppy.

Personality[edit | edit source]

Rover behaves like a guard dog. It is a diligent and loyal protection animal, who instantly tracked down Garou after the Hero Hunter helped Tareo escape and did not stop in pursuing his quarry under any circumstances. However, under intense and traumatic conditioning, it was forced to learn to sit even if the command was given by an enemy

Rover, however, does not instantly grow hostile toward intruders, as he neither attacked nor followed Garou and Tareo in his initial encounter with the pair, leaving them alone when they backed off slowly. Additionally, Rover does not seem to differentiate between friend or foe when angered, as he attacked and killed fellow monster Unihorn after the latter accidentally hit Rover during a fight with Garou.

Rover's canine behavior also means that he can be trained by someone, though they must have enough physical strength to do so. Garou jokingly tells him to sit during their battle before striking him to no effect; however, Saitama did the same and successfully conditioned Rover into obeying the command to "sit", which Bang unintentionally exploited later. He also came to fear Saitama because of this encounter, and disobeyed Orochi's commands choosing to flee instead.

Plot[edit | edit source]

Human Monster Saga[edit | edit source]

Monster Association Arc[edit | edit source]

Overgrown Rover encounters Garou

Overgrown Rover encounters Garou and Tareo when the two are trying to escape the Monster Association Headquarters.

After the two slowly sneak away from Rover without provoking it, three other Demon-level monsters, Super MouseShowerhead and Unihorn appear and fight the Hero Hunter. Unihorn and his associates use their Trinity Demon Bursting Speed Thrust attack to launch Unihorn at the Human Monster but Garou easily brushes him aside. Sending him shooting into the distance before realizing that it was in the same direction where the Monster Association cadre was, hearing its enraged roar. Unihorn's head is then thrown back all broken up. After a moment, Rover finally joins in the battle and fires an energy core from his mouth. Garou grabs Tareo and narrowly outruns it while the remaining two Demon-level monsters are eviscerated in the blast. Once Garou makes it to the surface, he tells Tareo to run while he handles Rover.

Garou lands a blow on Rover

The Hero Hunter strikes at Rover's front left leg in an attempt to throw him off balance, but Rover merely shrugs it off and fires another blast at him point-blank. This time, Garou is unable to escape it and is forced to take the full brunt of the assault, destroying several floors of the Monster Association headquarters in the process. When Rover sees the intruder still standing, he fires a rapid barrage of explosive sphere's as he runs across the damaged walls. This time, Garou manages to avoid all of the attacks, and strikes a powerful blow on Rover's snout.

Saitama punches Rover into submission

However, Rover merely bounces back, literally shaking off the attack coming out completely unharmed, shocking Garou. Rover then bites down on his leg and flails him around like a rag doll before shooting another close-range discharge at Garou, which destroys several more floors of the headquarters. Afterward, Rover stops pursuing Garou and allows Psykos to deal with him.

Overgrown Rover retreats

While roaming the Monster Association hideout, Rover encounters the wayward Saitama after discovering their HQ beneath his residence. Rover growls angrily at Saitama, then fires a few energy spheres at him. But the bald hero merely jumps over which, calling Rover a "bad dog" and remarking at his lack of training. Telling Rover to sit as he punches it into submission.[2]

When Saitama meets Orochi, and during the ensuing battle, Rover wakes up. Orochi notices Overgrown Rover is still alive and orders Rover to attack Saitama. The monstrous canine looks at Saitama for a second, but upon seeing him, recognizes its assailant and immediately retreats in terror, surprising Orochi and prompting him to ask Saitama what he did to Rover. Saitama simply tells Orochi that he gave Overgrown Rover a beating, and the two begin their battle.

Rover fires blasts at Bang, Bomb, and Fubuki

Later, Rover encounters Bang, Bomb, and Fubuki; firing multiple energy blasts at them while in hot pursuit.[3] Despite his injuries from Saitama, Rover continues to pressure his attack on the three outsiders with his lethal energy cores. The latter three manage to hide from it for a time, but Rover quickly catches them by surprise and nearly ends the trio with a sneak attack.

The elder martial artists are saved at the last second via psychic reinforcement by Fubuki whom suggest they use their newfound vigor to retreat while they still can. As Rover proceeds to attack by firing multiple energy balls at them, Fubuki charges towards the enery spheres in an attempt to deal with them on her own, but the two martial artists appear in front of her and deflect them away, protecting her. They later use their combination attack Cross Fang Dragon Slayer Fist on the dog-like monster.[4] Despite their best efforts, Rover still survives their onslaught without visible injuries. Out of annoyance, Bang rhetorically asks why Rover couldn't simply be quiet and sit down. Rover, remembering being forced into submission by Saitama after he gave the same command, obediently sat and stopped the fighting.

Warning.png Expand to see original webcomic information. Beware of spoiler content.

For the remainder of the invasion, Rover's enormous size begins to reduce drastically until it became no bigger than an average dog due to the damage he took from his multiple battles.

Neo Heroes Saga[edit | edit source]

Psychic Sisters Arc[edit | edit source]

After the destruction of the Monster Association, Rover encounters Saitama again, but instead of killing the former monster he merely lifted it, mistaking it for a lost dog. Black Sperm, watching them, then decides to follow Saitama as well, thinking that his chances to survive were bigger with him, and together, he and Rover persuade Saitama to take them to the Hero Association's headquarters in A-City, which the hero only begrudgingly accepts.

At the entrance, however, the security system recognizes Rover and Black Sperm as monsters and sends defensive robots to deal with them. Black Sperm hides behind Rover, who growls at the robots and they then witness Saitama destroying all of the robots. When staff members of the association asked Saitama about the event, Black Sperm was hiding in Rover's stomach. Rover and Black Sperm are later entrusted to Butterfly DX, Chain'n'toad, and Forte after the latter lost a bet with Saitama after he got hit by a car. Even though the heroes protested at first, after Forte finally witnessed Saitama's true strength, he accepted responsibility for them with his compatriots and advised them to work on being accepted by Saitama as well. Forte is later seen building a dog house for Saitama's new pets.

Ninjas Arc[edit | edit source]

Rover is taken for a walk by Butterfly DX and Chain'n'Toad while his handler; Saitama, has conversations with the S Rank hero Flashy Flash. Both of whom wondering if Forte's judgement was sound or not. Rover is next seen with Genos taking him for a walk as his master heads out to settle scores with Sonic and Flash.

Supreme Hero Arc[edit | edit source]

Rover's next seen being cared for by the three A Class's when Saitama next returns with dogfood for his pet. DX admonishes Bald Cape for his poor choice of kibble for the pet and rushes out to get the right kind, with Toad asking to get a new chew toy for Rover as well. In the meantime before and after the titular heroes arrival, Black Sperm confides in Rover about whether the collective of mysterious beings was effective in destabilizing society after all. Given how the upstart hero group is undermining the veteran heroes at every turn.

Neo Heroes Showcase Arc[edit | edit source]

Rover and Black Sperm overhear about five Dragon Level threats striking at several major cities simultaneously.

Abilities and Powers[edit | edit source]

As a high-ranked member and a Dragon-level Mysterious Being of the Monster Association, Overgrown Rover is an extremely powerful being, and quite possibly one of the most powerful Dragon-level mysterious beings to date. During his battle with Garou, he effortlessly tanked several blows from him and held the advantage for the entire match. Additionally, both Gyoro Gyoro and Orochi were in shock and disbelief that Overgrown Rover was not only defeated but fled when given an order to attack Saitama, showing that defeating such a monster, even in the eyes of the leaders of the Monster Association, is extremely difficult.

Supernatural Abilities[edit | edit source]

Overgrown Rover's rapid barrage of energy blasts

Energy Projection: Rover is capable of firing destructive energy bursts in rapid succession from his mouth. These energy blasts are powerful enough to incinerate stone, level city blocks, and destroy several floors of the Monster Association Headquarters with ease along with severely injuring Garou and killing two Demon-level beings in a single shot.[5] Rover's energy blasts can also cause shock waves strong enough to shake the surrounding surface area of Z-City that Saitama mistook as an earthquake.[6] While the projectiles are presumably energy balls, Saitama noted it to be "fire".[7]

  • Trajectory Bending: Rover can change the trajectory of his energy balls, causing them to chase after their targets.[8]

Physical Abilities[edit | edit source]

Immense Strength: As a Dragon-level monster, Rover boasts a tremendous amount of strength and power. He was able to slam Garou against the wall and floor with ease and break Unihorn, a monster that boasted a nigh-unbreakable horn.[9]

Overgrown Rover withstanding Bang and Bomb's combination attack

Immense Durability: Rover is one of the most durable monsters in the series, as he was able to withstand a punch from Saitama which shook the entire Monster Association Headquarters and left a massive crater where Saitama had struck him.[10] The attack only left the monster unconscious for a short time, though, as pointed out by Bomb later on, the punch had noticeably weakened him.[11] Despite this, Saitama admitted that he was going easy on Overgrown Rover.[12]

In addition, Rover was also able to take hits from Bang, Bomb, and Garou while sustaining little to no damage whatsoever.[13][14] Rover also forced Bang and Bomb to use Cross Fang Dragon Slayer Fist, a technique more powerful than even the one used against Elder Centipede[15] and even though Rover had already been weakened by Saitama, this attack still had seemingly no effect on him.[16]

Immense Speed: Rover is quite fast. He was able to keep up with Garou in his half-monster state and was fast enough to run horizontally across the walls of the Monster Association Headquarters.[17] Rover was also able to keep up with S-Class level combatants such as Bang and Bomb, and was even able to catch them by surprise.[18]

Overgrown Rover catching Bang, Bomb and Fubuki by surprise

Enhanced Stealth: Despite his enormous size, Rover is stealthy enough to appear behind Garou and Tareo without either of them noticing until Garou turned around.[19] It's even skillful enough to sneak up on veteran martial practitioners like Silverfang and his brother as well as the psychic Blizzard without revealing a hint of it's presence.[20]

Enhanced Senses: As a dog-like monster, Rover seems to have a very sharp sense of smell and hearing. He was able to detect the location of Bang, Bomb, and Fubuki when they were in hiding.[21]

Fighting Style[edit | edit source]

Rover has no refined fighting style; his attacks are limited to bombarding his enemies with energy blasts or biting and shaking them like a dog. Whenever an enemy enters his domain with hostile intent, Rover relentlessly attacks until the target escapes or dies.

Guard Dog: Due to his canine nature, Rover is assigned to guard the entrances to the Monster Association against intruders.

Major Battles[edit | edit source]

Participants Chapter(s) Episode(s) Result
Overgrown Rover, Unihorn, Showerhead and Super Mouse vs. Garou 91 None Interrupted by Overgrown Rover
Overgrown Rover vs. Garou 91 None Win
Overgrown Rover and Nyan vs. Saitama 106 None Loss
Overgrown Rover vs. Bang, Bomb, and Fubuki 123, 124, 125 None Overgrown Rover ceases fighting

Trivia[edit | edit source]

  • Rover's Japanese name "Pochi" is a common name for dogs in Japan, similar to "Rover" for the western world. Moreover, this name is similar to poochy, which refers to the disproportionate size of Overgrown Rover.
  • Murata showed Rover's design on a wedding card before the monster's manga debut.
  • In the webcomic, Garou and Rover begin to fight without encountering Unihorn, Showerhead, and Super Mouse. Garou puts a much better showing and ends up telling Rover to sit. Garou punches Rover into the ground where they were fighting, leading them to fall into the headquarters' basement.
Warning.png Expand to see original webcomic information. Beware of spoiler content.
  • Rover is the second mysterious being to survive a punch from Saitama, the others being Boros, Orochi, Awakened Garou, and Evil Natural Water. Though in Rover's case, Saitama was holding back and had no intention of killing him.
  • According to Butterfly DX, Rover is around 4 months old.

References[edit | edit source]

  1. One-Punch Man Webcomic; Chapter 124, page 5
  2. One-Punch Man Manga; Chapter 106, page 17-21
  3. One-Punch Man Manga; Chapter 123, page 24
  4. One-Punch Man Manga; Chapter 124, page 16-17
  5. One-Punch Man Manga; Chapter 91, page 26-41
  6. One-Punch Man Manga; Chapter 91, page 46
  7. One-Punch Man Manga; Chapter 106, page 17
  8. One-Punch Man Manga; Chapter 124, page 2-3
  9. One-Punch Man Manga; Chapter 91, page 25 & 52
  10. One-Punch Man Manga; Chapter 106, page 20-29
  11. One-Punch Man Manga; Chapter 124, page 4
  12. One-Punch Man Manga; Chapter 108, page 9-10
  13. One-Punch Man Manga; Chapter 91, page 50-51
  14. One-Punch Man Manga; Chapter 125, page 6
  15. One-Punch Man Stream; November 2017
  16. One-Punch Man Manga; Chapter 125, page 7
  17. One-Punch Man Manga; Chapter 91, page 42-45
  18. One-Punch Man Manga; Chapter 124, page 5
  19. One-Punch Man Manga; Chapter 90, page 44-45
  20. One-Punch Man Manga; Chapter 124, page 6
  21. One-Punch Man Manga; Chapter 124, page 4-5

Navigation[edit | edit source]

Monster Association
Leaders OrochiPsykos
Executives Black SpermEvil Natural WaterHomeless EmperorFuhrer UglyGumsOvergrown RoverNyan Elder Centipede Gouketsu 
Dragon Gale Wind Hellfire Flame Phoenix Man 
Demon Awakened Cockroach Bug God Devil Long Hair Do-S G5 Hundred-Eyes Octopus Vampire (Pureblood) Rafflesidon Royal Ripper Senior Centipede Face Ripper Fist Fight Djinn Free Hugger Rhino Wrestler The Three Crows Showerhead Super Mouse Unihorn The Great Food Tub Vacuuma 
Tiger Destrochloridium Electric Catfish Man Mad Doctor Fish Maiko Plasma Marshall Gorilla Sludge Jellyfish 
Unknown Eyesight Gyoffrey Goddess Glasses Venus Mantrap Junior Centipede Haragiri Rosie Choze Benpatsu Hamukichi Volten Evil Eye Gale Hellfire Evil Eggs Sword Devil Executioner 
Mysterious Beings
Unaffiliated Crablante Vaccine Man Marugori Piggy Bancon Giant Snowman Himawari Personification Of A Light Pull Cord Kombu Infinity170,000-Year-Old Cicada Larva 170,000-Year-Old Cicada Adult Demonic Fan Delorean Alien SeerThree-Eyed Ghost Surprise-Attack Plum Tongue StretcherGiant Crow Octopus Claw Man Grizzly Nyah Suppon Gigakigan Hotdog Game-Berus Autumn Phantom Red Golden-ringed DragonflyJumping Spider Scaledon Enamel Black Roast Macho Daikon Withered Sprout Twin-Headed Tsuchinoko Man-Eating Capybara Pot Bellee Kenzan Rat Pesky Clown
Native Tribes Forest Tribe (Forest King ) • Seafolk (Deep Sea King Lord Great White Messenger of the Seafolk ) • Skyfolk (Sky King Eagle Hawk Falcon Kite ) • Subterranean People (Subterranean King ) • Terror Lizard Clan ( Ancient King )
Dark Matter Thieves Boros Geryuganshoop Melzargard Groribas Dark Matter Gunner 
The Organization G4 G5 
House of Evolution Carnage Kabuto Beast King Armored GorillaKamakyuri Ground Dragon Frog Man Slugerous Mosquito Girl 
Anime-Only Mysterious Beings Super Custom YO649Z Mk. II Fish of Darkness *Pluton Men's Esthetician Man *Dirt Earthworm Japanese Giant Salamander Lord of Mountains TV Junkyard Monster Urn Eel Crazy Brown Bear 
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