
Symbiotes, a fictional species of extraterrestrial parasitic life forms in Marvel Comics, are known to have a weakness to sound and fire. This weakness is believed to be linked to their origin, as they were created by an ancient deity named Knull, who ruled over a universe of darkness. When the universe exploded into life, Knull created the first symbiote, which would eventually evolve into the Klyntar race, also known as Venom. While the exact science behind their weakness is not provided in the comics, some fans have theorized that the high-intensity sound causes damage to the symbiote's cellular structure, resulting in its demise. Despite their weaknesses, symbiotes possess the ability to enhance their hosts' physical and mental traits, granting them superhuman abilities.
| Characteristics | Values |
|---|---|
| Weakness to sound | All symbiotes are weakened by extreme sounds or sonic frequencies |
| Cause of weakness | The weakness is unintentional and stems from the species' origin |
| Scientific explanation | The symbiote may be a semi-liquid organism with a lot of cytoplasm and a thin membrane. High-volume sounds could damage the membrane or the symbiote's DNA |
| Other weaknesses | Fire, magnesium, and high voltage electricity |
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What You'll Learn

The origin of the Klyntar race
The Klyntar, or the Symbiotes, are a fictional species of extraterrestrial parasitic life forms that appear in Marvel comics. They are most commonly associated with Spider-Man, to whom they are symbiotically bonded, creating a single entity. The first and most well-known symbiote is Venom, who originally attached itself to Spider-Man during the 1984 Secret Wars miniseries.
However, the symbiotes eventually gained free will and rebelled against their creator. They attacked Knull and trapped him in a 'planet' made up of countless symbiotes, naming this planet and their race 'Klyntar', which means 'cage' in their language. The main function of the Klyntar race became to keep the King in Black locked away, thereby neutralizing his control over their minds.
Over time, the planet Klyntar accumulated a rocky crust and atmosphere, developing a varied ecosystem of symbiote-based flora and fauna. The Kree Empire discovered this planet and began harvesting symbiotes for a super-soldier program, with the only known success being Tel-Kar. Unfortunately, the planet was also raided by an alien poacher named Haze Mancer, who abducted and weaponized the symbiotes. Despite these intrusions, the benevolent symbiotes established the Agents of the Cosmos, an organization dedicated to maintaining order across the universe.
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Symbiotes' weakness to sound and fire
Symbiotes, also known as the Klyntar, are a fictional species of extraterrestrial parasitic life forms that appear in Marvel Comics. They are known for their vulnerability to sound and fire, two weaknesses that are directly linked to their species' origin.
In the Marvel Universe, the symbiotes were originally created by an ancient malevolent deity named Knull, also known as the King in Black or the god of darkness. When the universe came into existence, Knull's realm of darkness was illuminated by the assaulting light, which he found insulting. In retaliation, Knull created the first symbiote, All-Black, using the cosmic energies of a severed Celestial head as his forge. It is within this forge that the symbiotes first experienced pain and fear, developing weaknesses to sound and fire.
The weakness to sound is particularly notable, as it has been exploited by Spider-Man on multiple occasions to rid himself of the symbiote costume. In one instance, Spider-Man used the sound vibrations created by a church bell to remove the symbiote, causing it to leave his body and bond with a new host, Eddie Brock. Additionally, the symbiotes' webbing is made out of themselves, so Spider-Man could exhaust them by forcing them to use a large amount of webbing.
While the divine origin of the Klyntar race explains their inherent weaknesses, some fans have proposed scientific theories to explain their vulnerabilities. One theory suggests that the symbiotes are semi-liquid, composed of cells with a lot of cytoplasm and a thin membrane. When exposed to high-volume or high-pitched sounds, the cytoplasm may be jostled violently, causing damage to the membrane or the cells' DNA.
Despite their weaknesses, the symbiotes possess formidable strengths, including the ability to amplify their hosts' physical and emotional traits, granting them superhuman abilities. They can also alter their hosts' personalities and memories, influencing their darkest desires. As new symbiotes are spawned and existing ones evolve, their strengths increase, and their weaknesses decrease. However, their vulnerabilities to sound and fire remain significant, with even the newest breeds susceptible to intense sonic waves and heat.
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Scientific theories behind the weakness
The Klyntar, more commonly known as symbiotes, are a fictional species of extraterrestrial parasitic life forms in the Marvel Universe. They are vulnerable to extreme sounds or sonic frequencies. While the comic creators have not provided an explicit scientific explanation for this weakness, fans have come up with several theories. One theory suggests that the symbiotes are semi-liquid, multicellular organisms with a lot of cytoplasm and a thin membrane, allowing them to move and act like a liquid. When exposed to high-volume and high-pitch sounds, the intense vibrations could potentially rupture the cell membranes or cause damage to the DNA and organelles, leading to the death of the symbiote.
Another theory relates to the divine origin of the symbiotes. In the Marvel comics, the symbiotes were created by an ancient malevolent deity named Knull. Some fans suggest that Knull unintentionally gave them this weakness during their creation, while others speculate that it is due to the influence of Knull's divine nature. However, it's important to note that these are speculative theories, and the comic creators have not provided an official scientific explanation for the symbiotes' weakness to sound.
It is worth mentioning that not all symbiotes possess this weakness. Some variants, such as Anti-Venom, Red Goblin, Mayhem, Payback, and Grendel, are immune to sonic attacks due to modification. Additionally, symbiotes are evolving and developing a growing resistance to sound, but they have not yet achieved complete invulnerability to sonic attacks.
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The role of Knull, the god of symbiotes
Knull is a primordial deity and the god of the abyss from the beginning of time. He is commonly associated with Venom and Carnage in Marvel Comics. Knull is depicted as an evil deity who created the alien races known as the Klyntar/Symbiotes and Exolons, reigning over them as the King in Black.
Knull existed in the darkness before light entered the cosmos. When the Celestials began creating the seventh iteration of the cosmos, Knull, outraged by the invasion of his kingdom of darkness, retaliated by creating his first symbiote, All-Black the Necrosword, and slaying one of the Celestials. As punishment, the other Celestials banished Knull and the severed head of the Celestial he killed to the far reaches of space.
Using the cosmic energies of the severed head, Knull established a symbiote hive mind, spreading across the universe and killing the light and creation in the process. He continued killing gods, enslaving others, and waging a war against the light. Knull created an army of symbiote dragons with himself at the center of the hive mind, intending to conquer the cosmos.
Knull's control over his symbiote army was disrupted when Thor, the God of Thunder, struck down one of his dragons on Earth, severing the connection between Knull and his hive mind. The scattered symbiotes bonded with benevolent hosts and, influenced by concepts of honor and nobility, turned against their god, trapping him inside an artificial planet formed of billions of symbiotes.
Knull eventually reawakened and discovered he could bond with "lesser creatures" and control them as vessels. He resumed his conquest of the cosmos, hunting down and infecting powerful beings like the Silver Surfer to serve in his army. Knull's ultimate goal was to kill all beings of light and destroy the creations of the Celestials.
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How Spider-Man uses sound against symbiotes
Spider-Man has had several encounters with symbiotes, the first and most well-known being Venom, who attached itself to Spider-Man during the 1984 Secret Wars miniseries. Symbiotes are a fictional species of extraterrestrial parasitic life forms that form a symbiotic bond with their hosts, altering their hosts' personalities and memories, influencing their darkest desires, and amplifying their physical and emotional traits, thereby granting them superhuman abilities. They are also known to have a weakness to sound and fire.
Spider-Man has used sound against symbiotes on multiple occasions. In one instance, Spider-Man used sound waves to hurt the symbiote and separate himself from it. The symbiote then took refuge in a church's bell tower, indicating a sensitivity to sound. Spider-Man also discovered that the symbiote's webbing was made of itself, so he forced it to use excessive webbing, exhausting it and leaving it vulnerable. This tactic, however, has limited use in a fight due to the large amount of webbing required.
In another instance, Mary Jane Watson, armed with sonic grenades and a stun gun, was sent into a nest of symbiotes to retrieve a meteorite. She successfully defeated the symbiotes and retrieved the meteorite. Spider-Man has also used a sonic-modified stun gun to defeat Venom and other symbiotes roaming New York City.
While the exact scientific reason behind symbiotes' weakness to sound is not explicitly stated in the Marvel Comics source material, some fans have theorized that it may be due to the semi-liquid nature of the symbiotes, causing their cells to rupture or sustain damage when exposed to high-volume and high-pitch sounds.
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Frequently asked questions
Yes, all symbiotes are weak to sound and fire. This is due to their divine origin, as they were created by Knull, the eldritch god of darkness.
There is no scientific explanation as to why symbiotes are weak to sound, but a theory suggests that the high-volume and high-pitch sounds cause the cytoplasm of the symbiote's cells to burst through the membrane.
On one occasion, Spider-Man used sound to his advantage to exhaust the Venom symbiote. He forced the symbiote to use a great deal of webbing, causing it to exhaust itself, similar to blood dripping from a wound.











































