Carnage was once a serial killer known as
When the symbiote came to rescue Eddie, it ruptured the wall of Brock's cell and left the oblivious Kasady a gift: a newborn symbiote, which would bond with one of the Marvel Universe's most disturbed minds to become Carnage.
After Venom broke through the prison cell that held his host Eddie Brock, a small piece of the symbiote was left behind. That piece soon bonded with Cletus Kasady, Brock's cellmate. Once he came into contact with it, the two bonded, and Carnage was born.
The spawn of the Venom symbiote then attached itself to Kasady through his bloodstream. Carnage achieves this by entering Kasady's body through a cut on his hand. This is the reason why Carnage appears as the colour red, as he entered through the bloodstream, which is of course red.
Because Kasady is a deranged serial killer, they share a sadistic personality and their bond is stronger than that between Venom and Eddie, and Carnage increases Kasady's violent tendencies. Carnage, then, is more powerful, violent, and thus deadly than Venom, and became his archenemy in the comics.
Carnage is a psychopath. Venom also, at times, does not want the symbiote to spread, and has actively hunted down other symbiotes. And to build on what you are saying, Venom also feels responsible for Carnage. That's why Venom always tries to be an active character when Carnage is on the loose.
Venom later decided to absorb the Carnage symbiote "for good", during which Kasady retained the Carnage persona by costuming himself in red paint and continuing his killing sprees (albeit as a powerless human).
Carnage is Venom's son. Like most organic beings, Venom's race known as the Klyntar also reproduces and creates other symbiotes. Venom spawned an offspring while he was rescuing Eddie Brock from prison. The newborn symbiote bonded with Eddie's cellmate Cletus Kasady and became Carnage.
A symbiote is only as strong as the bond that it shares with its host. With that in mind, Venom is the clear winner, having formed a number of strong bonds since making its debut back in issue 252 of The Amazing Spider-Man.
Venom is a villain in Marvel's Spiderman. He also known as Eddie Brock. He hates Spiderman because he thinks he is the cause of all the bad luck in his life. Venom is bigger and stronger then Spiderman.
In the Venom comics and movie, a red symbiote typically indicates an evil symbiote. This is because a symbiote is a living weapon created by the Klyntar a. k. a. the Venom race. Red is a color associated with danger, chaos, or evil; thus, when a Klyntar has a red hue, it is often indicative of a more malicious being.
However, as per the latest update, Venom 3 is set to start production in June 2023. That's somewhat surprising considering the ongoing WGA writers' strike, but presumably, the team is confident about not needing any rewrites.
The bond between the Carnage symbiote and Kasady was stronger than the bond between Brock and the Venom symbiote. Cletus Kasady was also a serial killer and thought of as insane. As a result, Carnage is far more violent, powerful, and deadly than Venom.
Cletus and Carnage's union gets a bit complicated. In the comics, Eddie Brock does a stint in prison and his cellmate is none other than Cletus Kasady. While in prison, Venom produces an offspring named Carnage. (He reproduces asexually, in case you were wondering.)
While captive, the Venom symbiote was forced to give birth to five offspring - Riot, Lasher, Phage, Agony, and Scream - who were bonded to PMCs hired by the Life Foundation.
Dylan Brock is the son of Eddie Brock and Anne Weying. When Anne bonded to the Venom symbiote, she somehow became pregnant with Dylan. He was created by the symbiotes in order to destroy their god Knull and sever him from the hive-mind.
Black Symbiotic Costume: May Parker is bonded to an alien symbiote which was once worn both by her father, and Eddie Brock (formerly the costumed villain known as Venom) that grants her additional powers.
The reason for this is that Carnage is a "red one," as Venom states, which is apparently quite concerning. Venom refuses to emerge from Eddie's body again, clearly scared of his vermilion enemy.
Who would win in a fight between carnage and riot? Carnage does have more abilities, but was like a rampaging kid and Venom ate it to kill it. Riot was cunning, and was even able to rip Venom from Brock and would have eaten him if Brock didn't rebond with it.
Venom simply pulled the symbiote off of him and ate it, becoming stronger.
Blue Symbiote (2) (Agony): In the comics Agony was one of the symbiotes forcibly spawned from Venom alongside several others by the Life Foundation.
Following it giving birth to Toxin, Cletus began affectionately referring to the Carnage symbiote using female pronouns. He has more recently reverted to referring to it with male pronouns.
Combining with the nearby Brock, the symbiote shared his hatred for Spider-Man, as well as mentally sharing with Brock its former host's secret identity of Peter Parker. From there, the two would be known as Venom, seeking violent retribution against the man who had wronged both of them.