Yes, in the comics, the Venom symbiote has officially been an Avenger, notably during the War of the Realms event where it was offered and accepted a spot on the team, becoming an official member separate from a single host, though its heroic stints are often temporary and complex, existing more in the comics than the mainstream MCU.
As confirmed by this official Marvel Comics article, which details various villains who have joined the Avengers, I was reminded that during the War of the Realms event, the Venom symbiote was offered an official spot on the team.
Venom hates Spider-Man because the symbiote was bonded to and then rejected by Spider-Man, its mimicry makes Peter a dark mirror, Eddie Brock's personal vendetta merges with the symbiote's resentment, and biological plus ideological drives transform rejection into focused, enduring hatred.
However, Venom left a detached piece of itself behind in the other universe, which began to move on its own.
Venom, also known formally as "The Symbiote", is a character appearing in American comic books published by Marvel Comics. The character is a sentient alien symbiote with an amorphous, liquid-like form, who survives by bonding with a host, usually human.
Due to Sony and Marvel Studios' 2015 deal for Spider-Man to enter the MCU, the character could not appear in the film itself, challenging the writers to make a Venom origin story without Spider-Man.
However, their time together as the crime-fighting hero meant that the Venom too now wanted his hosts to be good guys, and to help people. So inspired was he by this partnership, that he always simulated the design of Spiderman's black costume when transforming, right down to its spider emblem.
As Venom is doused in acid, he bids farewell to Eddie, but notably, he says, “goodbye for now,” which is a callback to an earlier moment in the film, and a clear indication that the character will return.
During a confrontation in a cathedral between the Venom and Carnage symbiotes, Mulligan was apparently killed by Barrison. However, he absorbs a piece of Carnage, which later revives him and causes his eyes to glow blue. Patrick Mulligan appears in Venom: The Last Dance, portrayed again by Stephen Graham.
Carnage is a supervillain appearing in American comic books published by Marvel Comics, usually as an adversary of Spider-Man and the archenemy of Carnage's father Venom, in particular the Eddie Brock incarnation of the character, although Carnage and Venom have joined forces when their goals have aligned.
And in the case of Ultimate Spider-Man specifically, the difference in lore. Venom in 616 is immune to Spider-Man's Spider-Sense because of the time the symbiote spent with Spider-Man. But in 1610, the Symbiote (which was artificially created and not an alien) that bonded to Spider-Man was destroyed.
Edward "Eddie" Charles Allan Brock a.k.a Venom, is a anti-hero (formerly supervillain) from Marvel Comics. Eddie Brock was, after Spider-Man, the second human host of the Venom/Klyntar symbiote. He was a reporter who had success, that then turned into failure, and bonded with a symbiote named Klyntar.
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1. All-Black the Necrosword. Strangely enough, the most powerful symbiote of them all is not a "suit" but a "sword" — All-Black the Necrosword, wielded primarily by the god of symbiotes himself, Knull.
By most metrics, this film was bad. Not a single character outside of Eddie/Venom spoke like a normal person does, boiled down to mere caricatures instead of fully-fledged characters. They provided heavy exposition, not trusting the audience to understand the plot or world building.
Knull, the dark god of the symbiotes, is the creator of the first symbiote, Venom, and he waged a brutal war against the celestial beings, using his power to shroud the universe in darkness.
He is constantly trying to sacrifice himself to save Eddie and when they do briefly break up in the 2nd film, Venom is so distraught that he goes on a bender (at a freaking gay bar!). Aside from the “urge to merge” of it all, Venom themself is a nonbinary queer icon.
Venom (Eddie Brock) In Comics Powers, Villains, History | Marvel.
Prior to the film's theatrical release, Espinosa clarified that Morbius is set in the same universe as the SSU Venom films.
Venom is portrayed by Tom Hardy in the MCU with a height of 5'9” (1.75 m) though his size is variable. The comic book height of Venom is 6'3” (1.91 m). Venom is the name for a fictional human host, most famously Eddie Brock, combined with the alien symbiote that gives him powers.