What wasn't revealed until later was the reason behind the symbiotes needing a host. Venom needs a host to survive because of the Symbiote's need to consume phenethylamine, a chemical found in the human brain.
The character is a sentient alien symbiote with an amorphous, liquid-like form, who survives by bonding with a host, usually human. This dual-life form receives enhanced powers and usually refers to itself as "Venom".
As previously stated, the Venom symbiote (as well as a few others) has the ability to live independently from a host, in a humanoid form of his choosing.
Venom is an immortal extra-dimensional fragment of a destroyed hive-mind. Eddie Brock, on the other hand, is a simple man from New York City who is entirely mortal. This means that, while the Venom symbiote can heal Eddie's wounds, it can't stop him from aging.
They can bond with any living organism, can rapidly heal their host, remove their hosts' need to eat or sleep, and can grant their hosts new abilities. Now, the symbiotes have gone one step further and can even temporarily cure death.
As you may recall from the first Venom movie, the symbiote was unable to bond with numerous people and left each of its test hosts dead. It wasn't until Venom formed a special bond with Eddie that both the host and symbiote were able to survive.
With every symbiote, the ability to spawn a new puts the former in danger, as there is a possibility of the spawn is normally more powerful than the former. Knowing this, if venom were to spawn again, carnage would be rendered useless against the newer spawn, whether it be his or venom's.
a natural weakness to sonic attacks and heat-based attacks, which Knull unintentionally gave them while they were being forged. However, symbiotes have a growing resistance to sound and fire due to their evolution.
Venom's symbiote has explained on many occasions that the Klyntar planet is practically devoid of emotions, yet over time he knows that he forms genuine love for Eddie. Venom bonds more with Eddie and experiences guilt, jealousy, and sadness over his other half.
By eating Carnage, Venom is effectively returning his spawn back to his former "unborn" state within Venom's mass, not taking anything he didn't already have into his cells.
Most folks are familiar with the fact that the symbiote who would come to be known as Venom first bonded with Peter Parker. It got a taste of the power of Spider-Man and grew to love that power. It grew to love the feeling of the wind on its face swinging through the city. It loved the force behind every punch.
However, you might've noticed in Marvel's Spider-Man 2, the villain is completely invulnerable to fire. As explained in an IGN interview, this isn't a continuity error, but rather an intentional design choice made in service of intuitive gameplay.
In an IGN interview, game director Bryan Intihar says they fireproofed the character for purely practical reasons. "Fire doesn't hurt the Symbiote and Venom in this game, did you guys notice that?" Intihar admitted.
In the present, he attempts to use Eddie Brock to investigate Cletus Kasady, but is seemingly killed during a battle between the Venom and Carnage symbiotes and Barrison. However, he absorbs a piece of one of the symbiotes, which later revives him and causes his eyes to glow blue.
This stronger bonding with Kasady resulted in Carnage being more physically formidable than Venom was. This joining together through the blood is also the explanation for Carnage's red color scheme.
Extremely loud sounds (or extremely high frequency sound waves) can shock the symbiote, and even cause him to separate from his host. Spider-Man discovered this not long after meeting Venom.
Anne commented on it was nice, only misinterpreted by Eddie about their kiss, but she clarified that it was about the power as Eddie suggested. Anne would also promise Eddie to not tell Dan about their mutual kiss.
Venom originally chose Peter but Peter rejected the symbiotic after learning that it was evil, Venom, now angry, found Eddie Brock, a journalist that lost his job and blames Spider-Man for it, their shared hatred of Spider-Man makes them both agree, that he needs to die.
Brock is enveloped in a new white “Anti-Venom” symbiote when remnants of the Venom symbiote in his body merge with special antibodies (produced by his white blood cells) due to Li's Lightforce energy.
