Venom has spent a lot of time in Marvel Comics as a Spider-Man rogue, only to gradually become an anti-hero in his own right and a character who can confidently lead their own film series. Venom and its sequel, Let There Be Carnage, surpassed expectations and found huge success through Tom Hardy's casting as Eddie Brock and the absurdist buddy comedy energy that's achieved through his banter with the possessive symbiote, Venom.
Source:https://www.cbr.com/venom-3-symbiotes/