Miles Morales was going to have the symbiote attached to him in Spider-Man 2 but the idea was scrapped.
Miles was bonded with the symbiote in the comic book run from 2019, titled ‘Absolute Carnage.’ In the comics, Cletus Kasady was resurrected by the Cult of Knull and hunts for everyone previously connected to the symbiote to use their codexes to free Knull from the celestial prison. Venom, Peter Parker, Miles Morales, and others team up to stop Dark Carnage from destroying everything, but in the second issue of the comic, Dark Carnage infects the young Spider-Man with its offshoot, overwhelming desperate Miles and turning him into Spider-Carnage.
In the preview, Miles Morales is sitting around a fire and telling the Marvel Universe characters who rescued him about how he ended up in a Venom/Carnage symbiote suit. Miles says that he first met Venom shortly after the electricity went out in the Dark Ages series. Things worked out for a while, he continues, up until Carnage also attached himself to Miles’ suit and things took a turn for the worse. The suit looks relatively similar to Peter Parker’s symbiote suit in past Spider-Man runs, though Miles’ comes with a hood and some extra white markings.
This whole storyline was hard for Miles Morales, who was infected by the Dark Carnage symbiote and became a manic powerful lunatic. When he was affected by the symbiote, Miles Morales was terrified for two issues before Eddie Brock’s Venom freed him by killing the parasite. Of course, we are also wondering if we will see Symbiote Miles Morales in another fictional media, which will also be the focus of this discussion.