Here's an interesting fact about this issue. The issue, titled Carnage does not feature a single scene of Carnage. It does however revive some old, long unseen characters, aka, Doppelganger and Shriek.
It starts with a usual scene, of an armored truck trying to escape while another car tails behind it, trying to cut it down/ catch it/ rob it. Swinging behind is what seems to be Spider-man - except that he has 6 arms and a few eyes.
The scene jumps to a seminar where Tony Stark is seated. Peter made some excuses not to go for this seminar by a 'Michael Hall.' Michael hall is supposed to be a computer manufacturer who has developed some chip that can transfer thoughts into movement of an external prosthetic robot/ arm. ( Basically some technology that, if existed today would be used to create new arms and legs for the handicapped.) Check out the image below.
After the seminar, Stark spots the weird looking Spider-Man swinging around the streets. He calls Spidey to see if its him. Peter is still at his apartment and decides to go help Tony catch this imposter. Iron man first confronts the creature, who trashes his metal ass. Spidey comes a little later and explains that the creature is non other than Doppelganger, as illustrated below.
Spidey explains that previously, everywhere Doppelganger went, so did an angry mob. The angry mob creating powers did not come from Doppelganger, but from someone else on the team Carnage led instead. Just as he is about to mention who it is exactly, an angry mob appears out of no where. Iron man and Spidey fail miserably at controlling the mob until some blue and red robot guys appear, and sort of web everybody up.
The flying robots then take a lethal shot at Doppelganger. Just as the shot is fired however, a civilian jumps to take a partial hit. (Clearly mind controlled). We later find that Shriek was in the truck that Doppelganger was chasing. Doppelganger is seen lifeless and contained, by whoever was transporting Shriek.
So at this point everyone is probably wondering who Shriek is? Shriek, actually appears in the image above with carnage and Doppelganger ( The chic with a white face, black eyes, just above Spidey's head). Her powers are pretty much chaotic, causing angry mobs and etc. She probably controlled the innocent guy to block the hit meant for Doppelganger. The weird thing is that Doppelganger usually has eight arms, not six. There has to be some interesting explanation for it. Also, for those who do not know yet, Doppelganger and Shriek had a thing going on before ( mother-son relationship).