Warning: The following contains SPOILERS for the Venom 2: Let There Be Carnage trailer.

A new trailer for Venom 2: Let There Be Carnage has revealed major changes to the origins of the supervillain Carnage, which change the story for the better. Carnage first appeared in Amazing Spider-Man #360, where Peter Parker responded to news reports of a monster resembling Venom, but with a red body instead of black. He soon discovered that he was facing a foe far more powerful and dangerous than Venom, composed of a union of a new symbiote and serial killer Cletus Kasady.

Cletus Kasady had first appeared over one year earlier in Amazing Spider-Man #344, where he was introduced as Eddie Brock's cellmate in Ryker's Island. A natural sociopath and sadist, Kasady had been convicted of 11 murders (including his own grandmother) over the course of his young life, though he bragged about having committed many more. Kasady planned to kill Eddie Brock as well, but Brock was able to escape prison before that happened with the aid of the Venom symbiote. Unfortunately, the symbiote was about to give birth in the manner of its kind and left its offspring behind in the cell, where it bonded with Kasady, creating Carnage, who was more powerful than Spider-Man and Venom put together due to the Carnage symbiote's gestation on an alien world.

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The trailer for Venom 2: Let There Be Carnage revealed that the film changes this origin significantly, as the film version of Eddie Brock is not a convicted criminal and thus couldn't share a cell with Cletus Kasady. Instead, Brock visits Kasady in his role as a journalist, to interview him as part of a story on his crimes and his approaching execution. During the interview, Kasady bit Brock and apparently drew blood, though he commented that "I have tasted blood before and that is not it!" This suggests that Kasady ingested part of the Venom symbiote, which somehow grew into a separate being inside of him and developed into Carnage.

Carnage in Venom 2 Let There Be Carnage and Marvel comics

While this origin seems equally improbable, it still relies less on coincidence and contrivance than Carnage's origins in the comics. Ignoring the coincidence that the Venom symbiote just happened to give birth as it was helping Eddie Brock escape from prison, it beggars belief that the Symbiote race does not care for its young or have any emotional attachment to its offspring. This was reportedly why the Venom symbiote did not feel the need to tell Eddie Brock that it was pregnant. It is hard to believe that any species could get as far as the Symbiotes have without possessing the drive to protect one's children that is a key instinct for most animals.

It was also improbable, given there were no familial attachments among the Symbiote race, that the Venom symbiote was not concerned about how its children might be made more powerful by having come to maturity on another planet. This factor gave Carnage the unique ability to reshape its body into weapons and alter the memories of other beings, making it a danger to its symbiote parent even ignoring its bond with a lunatic like Cletus Kasady. Given all that, it was a good move for the screenwriters of Venom 2: Let There Be Carnage to find another way for Cletus Kasady to gain a symbiotic connection without Venom just happening to leave its baby in his cell.

More: Venom 2: Why Carnage Is A Red Symbiote

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