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Anti-Regeneration

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There goes his ability to flip the bird...
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Fighting something with a Healing Factor is very difficult, as any injuries you inflict will rapidly be undone. Getting around this usually requires extreme force, special powers or tools, or clever tricks.

Ways of dealing with Healing Factor are:

  • Playing with Fire: Fire can cauterize wounds to prevent regeneration (including from death).
  • Kryptonite Factor: A special weapon or element, whether it be magical or scientific, can often do harm while ignoring a character's Healing Factor. Sometimes, this weapon or element will be connected to how the Healing Factor came about in the first place.
  • Excessive Damage: Healing Factor may have a limit of how much damage can be regenerated.
    • Complete Annihilation: Given situations like From a Single Cell, that is the only way to deal with such things.
    • A way of "distracting" the healing factor could be used, as in many instances, the regeneration power focuses on the most grave threat and moves on to lesser threats when those are dealt with, so a powerful toxin, disease, or radiation might take the full strength of the healing ability to combat, leaving the body vulnerable to more mundane damage like wounds, contusions, and bone breaks.
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    • The process of healing may expend a significant amount of energy and/or focus, allowing the opposition to prevail, ironically, via attrition.
  • Achilles' Heel: There may be a vital part of the body, such as the head or a Heart Drive, which cannot be regenerated if destroyed.
  • Preventing body parts from reattaching: Something that can reform itself can be defeated or severely hampered if a single body part is prevented from reattaching to the rest of the body.
  • Inflicting a Wound That Will Not Heal
  • If the healing factor works by "returning the body to its original state", rewriting its knowledge of what that original state is (e.g. through Reality Warping or a specialised virus).
  • Stealing the Healing Factor
  • Identifying the source of the healing and interfering with it or destroying it
  • Amplifying the healing factor so that it goes out of control and starts to perform Harmful Healing. This might culminate in the enemy dying as all their Life Energy is used up to power the healing factor, or as the new flesh and bone grows inwards and pierces their vital organs. Or worse, they might remain alive but reduced to an immobile mass of limbs and tumours.
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Sub-Trope of Power Nullifier. Compare with See the Invisible and Immortal Breaker. Often the means of defeating a Reviving Enemy.


Examples:

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    Anime & Manga 
  • In 3×3 Eyes, the Wu's Healing Factor is shown to be flawless, to the point that Yakumo and Benares can recover even from complete disintegration, but there are still weaknesses... in the second series Yakumo is unable to regenerate his arm after it has been sealed in a special jar by Zhou Gui, and in the third one Xun Gui's stone breath makes Yakumo unable to regenerate or recover.
  • Dragon Ball features quite a few characters with Healing Factors who have had to be stopped.
    • Namekians are the original regenerators in the franchise. They can heal dismembered limbs so long as their heads remain intact, although if they sustain enough damage they can die with their whole bodies remaining.
    • Cell is the Trope Namer for From a Single Cell, he can regenerate from any amount of damage so long as certain part of him remains at oncenote . So the one way to beat him is to disintegrate him all at once.
    • Majin Buu is an even more insane example, being capable of regenerating if even a single atom of him remains. The only known way to kill him is a Spirit Bomb empowered by the population of everyone on earth.
    • Future Zamasu used the Super Dragon Balls to wish for immortality and no matter how much damage he takes, he will always keep healing. He retains his immortality as Fusion Zamasu, after fusing with Goku Black, although it was gimped so that his body could be destroyed. However, free of his body, he Ascended to a Higher Plane of Existence and assimilated with the universe. The only way to beat such an Eldritch Abomination was to summon Zen'o to erase the multiverse from existence.
    • The filler villain Garlic Jr. received his wish for immortality from the Dragon Balls, allowing him to fully heal himself no matter how gravely he's damaged, including total annihilation. Gohan and the others defeated him by sealing him into The Dead Zone and closing off any means of escape. Garlic Jr. gained enough power from the Makyo Star many years later to break out; Gohan ended his reign again, this time by destroying the Makyo Star, taking away his power and resealing him into The Dead Zone.
  • Fullmetal Alchemist:
    • The Homunculi are almost always brought down through sheer attrition, as despite their immense regeneration abilities, the Philosopher's Stones that power them are still have a finite reserve of energy. Even the Big Bad isn't immune to this, as the final battle of the series largely consists of stripping him of the greater power he'd just acquired, and then simply whittling down what he has left with constant attacks from numerous characters.
    • Thanks to experience creating Philosopher Stones, Dr. Marcoh can use alchemy to sever a homunculus' connection to their stone directly. This requires point-blank contact from a man who's not at all a fighter, so he's only able to use it once. Note that just physically removing the stone isn't enough — that will force it to regenerate a whole new body, but even that takes only a fraction of a typical stone's reserve.
  • In Gundam Build Divers, the bugged up Raid Bosses have a ramped up Healing Factor, preventing everyone from dealing any meaningful damage. The Gunpla Battle Nexus Online administration, lead by Game Master, soon arrive armed with missiles outfitted with code originally designed to erase Mysterious Waif Sarah to stunt this healing factor and allow the players to destroy the bosses.
  • JoJo's Bizarre Adventure: Diamond is Unbreakable: Josuke's Stand can reverse damage done to people and objects, but can't reverse Okuyasu's Stand erasing them. Since they're allies for most of the series, this is actually an undesirable trait—when Okuyasu erases part of a girl's hair that caught fire, Josuke is unable to fix the huge bald patch left over.
  • My Hero Academia:
    • Though not a permanent solution as he was on a strict time limit, All Might defeats the original Nomu by using Rapid-Fire Fisticuffs to damage it faster than it can regenerate until it becomes weak enough to send flying toward the horizon.
    • Endeavor defeats a Nomu with a "Super Regeneration" Quirk by making his flames hot enough to turn blue and carbonize the head off.
  • One Piece: Buggy the Clown, who is capable of Detachment Combat, was initially defeated by Nami tying most of his body parts in a bundle before he could reassemble himself.
  • In The Promised Neverland, demons can rapidly heal any injuries they sustain, provided they aren't hit in the eyes. This becomes an issue when the Goldy Pond kids fight Leuvis, who not only has an even better healing factor than other demons, but he's also a highly trained and experienced hand-to-hand combatant to where he can perform Bullet Catches against a machine gun, making it impossible to actually hit his eyes under normal circumstances. How do the Goldy Pond kids outwit him? They discover, through Leuvis' actions, that his healing drains him of energy and he can only heal so much before he exhausts himself. Emma disguises a small flash bomb as a bullet hidden within a storm of hundreds of other bullets fired by all the other kids still able to fight in order to blind him, and as he covers his eyes, the kids keep shooting at Leuvis until his regenerative abilities run out.
  • Samurai Deeper Kyo:
    • As part of their powers over Wood, Saishi of the Goyosei can regenerate at will from a single cell. Akira ultimately renders her power null by freezing and shattering her very cells, destroying her for good.
    • Juunishinsho Shindara the Deathless is empowered by a Mibu spell which gives him an incredibly powerful Healing Factor that makes him almost invincible in combat. Yukimura, however, manages to use his newly acquired Sekireigan and superior swordmastery to inflict so much damage that not even his spell can save him.
  • In Soul Hunter, Chou Koumei's One-Winged Angel allows him to regenerate and, at the same time, grow even more by spreading his seeds around. Taikoubo ultimately does him in by using his reborn Dashinben to freeze him with incredibly icy winds from beyond the stratosphere.
  • Toriko has shown various ways to deal with characters and creatures with a Healing Factor.
    • Brunch defeats Elg, a centaur that can create clones through regeneration, by putting him and his clones under an endless loop of electrification.
    • Midora bypasses Ichiyru's healing factor from Minority World, an ability that causes everything to behave in opposite ways than normally they do due to minor particles that defy physical law, by damaging him faster than he can regenerate with the Power of the Void.
    • Chiyo dices one of the branches of the Coral King into small and delicate pieces with a long ranged slashes and inhibits its regeneration by applying Knocking.
    • Overwhelming asomeone to the point that their cells admit defeat will prevent them from regenerating and leave them at the mercy of the attacker.

    Card Games 

    Comic Books 
  • Deadpool's Walking Arsenal includes a sword made of carbonadium, a radioactive element capable of negating Healing Factors. This allowed him to kill everyone in one story line including all of the quick healers.
  • In the Marvel Universe the Muramasa blade is a katana that neutralizes Healing Factors. Wolverine used it to kill Sabretooth, but it was later stolen by his own Antagonistic Offspring Daken who bonded a piece of it to his claws.
  • In one Spider-Man storyline, Spider-Man and Nova are dealing with the revived Tri-Sentinel with the webhead trying to reach where the canister of Antarctic Vibranium (better known as anti-metal) is located and release it. Spidey gets to it and releases it, causing the Tri-Sentinel to run itself down as its nanites tried to repair the damage done, ultimately melting the machine to nothing.
  • One Wolverine story has Sabretooth gloating that he actually thought up the one way to beat a Healing Factor... as his foot is holding Wolverine's head underwater.

    Film — Animation 
  • The primary villain of Heavy Metal 2000 stumbles upon a fluid that can grant him Resurrective Immortality, provided he takes regular doses. Tyler goes on a quest for the source after attaining the key. He ends up squished under a huge stone door where regeneration would avail him naught. Further, The Mole unmasks himself, and attains access to the wellspring of eternal life. However, once the huge stone door closes, he's trapped in that chamber. As The Hero remarks: "Forever is a long time to spend all alone."

    Film — Live-Action 
  • The beginning of Hercules Unchained has a fight against Antaeus, who recovers from all injury whenever he touches the ground. Unlike the original Greek myth, Hercules defeats Antaeus by throwing him into the sea.
  • X-Men Film Series:
    • In The Wolverine, Wolverine has a bio-mechanical healing suppressant device implanted in him, thanks to Viper. For a large portion of the film, Wolverine finds he is no longer healing as fast as usual and needs to have his wounds stitched up.
    • In Logan, it's finally revealed that the long-term effects of adamantium exposure is healing factor degeneration. Wolverine has had adamantium bound to his skeleton for years and isn't healing as well as he could. Ultimately, his healing factor is completely compromised and he dies.

    Literature 
  • Animorphs: Morphing normally heals all injuries, but there have been notable exceptions, few of which are explained beyond Drama-Preserving Handicap: suffering Mode Lock (Tobias is stuck in hawk morph at the beginning of the series so an injury would be particularly devastating, when the ability is restored he can heal but still has to live as a bird), a genetic disease (a crashed Andalite refuses to fight because the disease stays with him when he demorphs, while another is allergic to the morphing process and cannot repair his severed tail), time travel (Tobias breaks his wing while in the Cretaceous and can't restore it), and possibly old age (Jake ends up in a Bad Future where Rachel is a complete wreck in a wheelchair, with no indication that she'd lost her morphing ability).
  • In The Legend of Huma, the Dragonqueen's chief warlord Crynus was enchanted by the renegade wizard Galan Dracos to make him unkillable- his wounds close instantly as soon as the weapon that inflicts them is removed, and even decapitation didn't stop him (although his headless body does become very fixated on retrieving its head). Huma and Kaz attempt to impale him with the evil-destroying Dragonlance, but fail because, even headless, the body can tell what they're trying to do and it dives out of the way, which at least implies that it would have worked. Ultimately he's defeated when the Silver Dragon returns and unleashes a torrent of dragonfire on him, vaporising every last trace of his body.
  • In Worm multiple characters have a Healing Factor with a common weakness: a core from which they regenerate. So long as the core remains, they can regenerate infinitely, using matter stored in an otherwise empty parallel reality to replace the damaged or severed material, but destroying it strips them of their healing factor.
    • In the case of parahumans this core is their corona pollentia, as destroying that removes their link to their powers. For most parahumans this is in their brain, but the most monstrous ones like Crawler or Echidna have shifted it to a more protected position deep within their bodies.
    • The Endbringers' core not only serves as the source of their Healing Factor but as their only vital point, so destroying this will damage them to the point of actually killing them. Behemoth and Leviathan have theirs in their chests, while the Simurgh has hers in the joint of her largest wing.
    • The exception to this is Scion, whose entire body is only a projection of mass pushed through from another dimension, almost like their entire body is a core. Even total destruction won't work, as they can just shunt more mass through to replace it from scratch.

    Live-Action TV 
  • Doctor Who: To try and kill a Time Lord, many factions in-universe resort to weaponry that is literally the trope name, so they can't just regenerate their way out of it.
    • The Daleks have been said to be able to dial up the intensity of their weapons fire to anti-regenerative levels.
    • "Last of the Time Lords": Martha has been collecting the pieces of a gun invented by UNIT that can kill a Time Lord permanently, preventing regeneration, in order to stop the Master. However, the gun is merely a smokescreen for her and the Doctor's real plans.
    • "Let's Kill Hitler": River gives the Doctor a Kiss of Death with lipstick containing the poison of the Judas Tree, which according to the TARDIS' voice interface prevents regeneration. As a result, he actually dies, and River ends up sacrificing her remaining regenerations to bring him back to life. It's later revealed that the Eleventh Doctor didn't actually have any more regenerations, but this is likely a retcon and was not the case when "Let's Kill Hitler" aired.
    • "Extremis" features a Time Lord execution device which has been specifically designed to disrupt regeneration energy within the condemned's body.
    • "The Doctor Falls": After she stabs him in the back, the Saxon Master shoots Missy with a blast of his laser screwdriver which he claims is strong enough to prevent her from regenerating. Given the Master's Joker Immunity, they'll probably turn up again despite this.
  • Heroes: Characters with regenerative powers can only be killed by being stabbed in a certain spot at the base of their skull, which somehow blocks their powers. And their healing abilities will reactivate and revive them if the stabbing implement is ever removed.
    • Arthur Petrelli manages to dodge this requirement by stealing Adam Monroe's healing factor entirely.

    Myths & Religion 
  • Classical Mythology:
    • One of Hercules' task was to kill the Hydra, which regrows any heads you cut off. He succeeded when his nephew Iolaos started to cauterize the stumps with his torch.
    • The giant Antaeus challenged travelers to a wrestling match to the death, without mentioning that every time he was in contact with his mother the Earth (i.e., thrown to the ground), his health and energy were completely restored. When Heracles came along, he solved the problem by hoisting Antaeus in the air with one hand and strangling him with the other.
  • Often werewolves are given a healing factor that is neutralized by silver.
  • The Lambton Worm is an English legend about a dragon which kills by constriction and is difficult to kill because it can reattach parts of its body that are cut off. It is eventually killed by John Lambton who, under the advice of a witch, lures the worm into the River Wear while wearing an armor covered in spearheads — the blades hurt the beast when it tries to constrict him, and the river flow washes its severed body parts away before it can reattach them.

    Tabletop Games 
  • In Big Eyes, Small Mouth, any special attack with the No Regeneration modifier cannot be healed using the Healing or Regeneration attributes, and has to be healed naturally. The Incurable modifier is a stronger version of this, and basically inflicts Wounds That Will Not Heal.
  • Dungeons & Dragons has this built into its game mechanics. For specific examples:
    • Trolls possess a Healing Factor which can only be overcome by injuring them with fire or acid.
    • 1st Edition AD&D Deities & Demigods Cyclopedia, Greek Mythology section: each minute the giant Antaeus is in contact with the ground, he heals all damage and gains 25 additional Hit Points. The hero Heracles (Hercules) defeats him by lifting him off the ground and inflicting damage on him while doing so.
    • 1st and 2ndnd Edition AD&D. When someone wears a Ring of Regeneration, they can only be prevented from regenerating if their body is totally destroyed by fire or acid.
    • 2nd Edition AD&D Planescape boxed supplement Planes of Conflict. The Quesar live in the Upper Outer Plane of Elysium. They regenerate 1 Hit Point per round, even after being killed, as long as they're in daylight. To prevent them from regenerating you just have to keep them out of daylight, such as moving them underground or casting a spell to create darkness or summon thick cloud cover.
    • 3rd Edition introduced regeneration as a standard monster ability that converts all damage taken to nonlethal damage and cures a certain amount of nonlethal damage each turn; this makes one impossible to kill without a specific type of damage that does not get converted, usually fire or acid as with trolls. Other possibilities might involve silver for werecreatures or devils, cold iron for fae or demons, and absolutely nothing for the Tarrasque. Damage that bypasses regeneration cannot be healed by it, since regeneration only removes nonlethal damage and damage that bypasses regeneration remains lethal. That said, a creature with regeneration still falls unconscious when its nonlethal damage exceeds its current hit points, so a character who can't bypass the foe's regeneration can still (assuming that they are moderately competent in terms of raw damage output) inflict enough damage to knock the foe out and then continue to assault the unconscious enemy to pile on more nonlethal damage, then after ensuring the foe will be unconscious for long enough, do whatever they need to do in the area and then GTFO before they wake up.
    • 3rd Edition also includes fast healing, which heals a certain amount of damage (both lethal and nonlethal) on the bearer each round. This means that fast healing can't be bypassed, but since it doesn't convert lethal damage to nonlethal, a creature with fast healing can be killed by an opponent who can damage them fast enough to outpace the healing and bring them to -10 hp. Fast healing is virtually always low enough that is not difficult for any equal-level adversary with moderate competence in raw damage output to accomplish that task; it just becomes a bit more difficult than it would be otherwise.
    • There are also the Hydras, which, as in Mythology, will regrow two heads for every one cut if the wound isn't sealed — usually with fire or acid for most species, though the fire-breathing pyrohydra requires cold instead. They also have the aforementioned fast healing ability, meaning they regenerate wounds inflicted to the body very fast, although not beyond death, unlike trolls and other regenerating beings.
    • The 3.5th Edition sourcebook Dungeonscape adds Trollbane to the adventurer's arsenal, a poison that makes weapons coated in it deliver lethal damage to all regenerating creatures (not just trolls). Though the stuff being wiped after one strike, it's best to reserve a dose for a Coup de Grâce on a foe brought unconscious by nonlethal damage.
    • In 5e, the wizard and sorcerer cantrip Chill Touch does decent damage at range and prevents the target from being able to regain hit points for one round. Useful both for fighting creatures with regeneration that you're not sure how to overcome (or have only a limited number of attacks that can do so so you need to save them for a coup de grace) and also to keep enemies from using healing potions or other magical means of regaining health as well.
  • New World of Darkness:
    • In Mage: The Awakening, the Abyss — a metaphysical wound in The Multiverse, separating the material world from the Supernal Realms — has the power to deal "resistant damage" that can't be magically healed. This is most often caused by absorbing the backlash from a Magic Misfire, but Black Magic practitioners can draw on the Abyss to inflict it as well.
    • In Werewolf: The Forsaken, werewolves take Aggravated damage from silver weapons, meaning that their Healing Factor can't fix it and they recover more slowly than a human would from the same injury. This is because Silver Has Mystic Powers granted by the Moon, a godlike primal Spirit with a deep-seated grudge against werewolves.
    • In Vampire: The Requiem, vampires take Aggravated damage from fire, sunlight, and some supernatural attacks; this can inflict immediate Final Death, takes days to regenerate (compared to seconds for a lesser injury), and consumes five times as much of their blood reserves to heal. Zig-zagged in that they can train themselves to heal it faster.

    Video Games 
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  • A few particularly powerful wizards in Arcanum have the ability to summon a regenerative cocoon at the moment of death, healing their wounds and increasing their lifespans. The Vendigroth Device is a weapon which was specifically designed to combat this technique, and exploits the fragile balance between magic and science to invert the cocoon and make it rip the mage apart instead.
  • Baldurs Gate Dark Alliance II is based on Dungeons & Dragons and as such, the trolls are subject to the "Will keep regenerating unless burned with fire or acid" rule described in the Tabletop Games section above.
  • In Darkest Dungeon, two enemies are capable of blocking healing moves from being used.
    • The Baron, the first boss of the Courtyard in the Crimson Court DLC, will summon four pods, one containing himself and the others containing Bloodsucker Mooks, which prevent healing moves from being used as long as at least one pod is intact. You can rupture a pod and release its inhabitant in one hit, no matter how weak, but doing this to all of them at once means you have to face the Baron and his flunkies all at the same time, and the Baron himself is enough of a handful to deal with.
    • The Hateful Virago, the ultimate Elite Mook of the Weald, can create Necrotic Fungi out of the corpses of her fallen allies. As long as at least one such Necrotic Fungus is on the field, you can’t use HP-restoring skills. The solution to this is to either eliminate the Hateful Virago first, make sure to kill the other enemies in a way that won’t leave a corpse, or eliminate any corpse left by a fallen foe immediately.
  • Diablo II: Some items may have the "Prevents Monster Healing" affix, which temporarily disables enemies' passive recovery of life points.
  • Final Fantasy VIII has the GF Brothers, a pair of Earth-elemental minotaurs who gain the health-boosting 'Regen' buff when in contact with the ground. You can make the boss fight against them easier by casting the Float spell upon them to interfere with the Regen effect.
  • The Serpent boss in Golden Sun: The Lost Age has a regeneration ability which lets it recover about 2/3rds of its max hitpoints at the end of every turn. However, the area above it has a series of light puzzles which, if completed, allow you to shine up to four beams of light onto it, potentially cutting its healing to a measly 30hp/turn instead.
  • In Mass Effect 2, krogan and vorcha enemies can regenerate health when damaged. Burning them with an incendiary attack or using Warp on them will stop them from regenerating.
  • Vamp from the Metal Gear series has a natural Healing Factor which is further augmented by experimental nano-machines in his body. When he's fought as a boss in Metal Gear Solid 4: Guns of the Patriots, Snake manages to inject him with a nano-suppressing syringe, taking away enough of his healing for Raiden to kill him in the knife fight that follows.
  • Overwatch: Ana's Biotic Grenade prevents enemies from healing temporarily, whether by Healing Factor or other healing sources.
  • Plants vs. Zombies: Heroes has the Sneezing Zombie teammate, which prevents the plants and Plant Hero from healing as long as it's on the field. This is only useful against Plant Heroes with the Solar Class since they have the most healing-based cards, but is especially effective against them, shutting down the dangerous Heartichokenote  and Astro Veranote .
  • Pokémon: The move Heal Block prevents the target Pokémon from healing, whether by its own moves, abilities, terrain, or items (for the last one, only Generation V and onward). Pokémon with the ability Liquid Ooze will also cause opponents that attempt to use draining moves on them to take damage instead of regenerating health.
  • Resident Evil 4: Regenerators and Iron Maidens are most easily killed by using a special scope on a rifle to aim at specific places were the Las Plagas parasites are inside their bodies. They can still be killed conventionally, but it requires an enormous amount of firepower and is usually a waste of ammo
  • Skullgirls: Miss Fortune swallowed the Life Gem, which lets her typically survives lethal attacks by reattaching severed body parts. In Cerebella's story mode, Vice-Versa crushes Miss Fortune into a new Life Gem—which has a cat's face, so she might technically still be alive. In Eliza's story, she is immobilized by her body parts being stored in separate containers.
  • Warcraft III:
    • The expansion introduced several freely available healing items that restore health and/or mana over time (Scroll of Regeneration, Clarity Potion...) with the caveat that the effect ends as soon as the unit takes damage.
    • Inverted with the Phoenix and Destroyer units, who have negative health and mana regeneration respectively. The Phoenix respawns every time it dies (unless its egg is destoryed), while the Destroyer has several spells that let it eat mana or status buffs to empower its attacks.

    Web Animation 
  • Death Battle has several fights where this is used by a character to defeat their regenerating opponent.
    • Deadpool vs. Deathstroke: The Carbonadium sword of Deadpool's is capable of removing Deathstroke's healing factor, allowing the Merc with a Mouth to decapitate him.
    • Kirby vs. Majin Buu: The fight ends with Kirby inhaling and blasting Buu's own attack back at him, pushing him into the sun. While the former didn't kill Buu due to his ability to regenerate from a single atom, getting blasted into the sun and thus having his atoms ionized certainly did.
    • Wolverine vs. Raiden: While the former had a very powerful Healing Factor and an adamantium skeleton, the latter's HF Muramasa, being a Vibroweapon, was capable of weakening the Adamantium's molecular bonds. Eventually, Raiden ends up slicing Wolverine's head off and cutting that to bits, preventing the mutant from regenerating ever again.
    • Hulk vs. Doomsday: Both combatants have a powerful healing factor, but Doomsday is able to overtax Hulk's by stabbing him with venomous bone claws several times and leaving said claws embedded in Hulk's body.
    • Venom vs. Bane: While both combatants have healing factors, Bane's comes from his Venom tube, which the Venom Symbiote punctures, disabling the healing factor.
    • Sephiroth vs. Vergil: Vergil had a top-notch healing factor that could easily allow him to shrug off impalement and even getting bisected. Sephiroth's Super Nova manages to overtax it via the heat and power of an exploding sun, allowing him to finish the weakened Vergil off.
    • Carnage vs. Lucy: Carnage has a strong enough healing factor to regenerate from being slashed to shreds by Lucy's vectors. Lucy overwhelms and vaporizes Carnage with an explosion comparable to the atomic bomb that's especially effective against the fire-vulnerable symbiote.

    Webcomics 
  • One-Punch Man: Melzargard's head has a small marble-like brain which allows them to regenerate endlessly. If a marble is destroyed, the associated head melts instantly, and Melzargard dies once they're all destroyed. This is mitigated somewhat by the fact that he has multiple heads and can freely move his brains within his body. However, his regeneration always begins with his heads, meaning that the brain can be easily found if his body is completely destroyed and forced to regenerate from scratch.

    Web Original 

    Western Animation 
  • Septarians in Star vs. the Forces of Evil can regenerate From a Single Cell, so various methods have to be taken to prevent it:
    • In Solaria's chapter in The Magic Book of Spells, she notes that she doesn't know of a proper way to dispose of Septarians, and so recommends you "blow them up and spread the pieces as far apart as possible". Going by Rasticore's example, this will at least put them out of commission for a few months.
    • Queen Moon used black magic to neutralize Toffee's healing factor, making him unable to regenerate. That's why he's missing his finger. Later, Star goes Golden Super Mode and blasts him with so much magic at once that his healing factor can't keep up, leaving him a barely living mass of goo unable to survive being crushed under a pillar.
  • Gems in Steven Universe can fully replace most of their bodies after some time because they're a projection of their gemstones. Damage to the gemstone itself mangles the rest of their body, is apparently very difficult to heal (Rose and Steven's healing powers are the only known way), and enough will kill them permanently. Gems trying to take other gems alive generally "poof" their bodies, then put their unharmed gemstone in a Containment Field that prevents regeneration. The standard strategy of the less merciful seems to be poofing the projected body before shattering the gemstone, while Bismuth's Breaking Point was designed specifically to shatter gems immediately mid-fight.


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