Minion

There is many ways they could make a 4th one, even including venom. The doc who will supposely become lizard kept the little venom part. In the begginning part of the movie it should show how he becomes lizard and the troubles he faces, while Peter is at his best freinds funeral. It should show the part in a cage the doc has set up, and he test himself with what ever they would make up. So he becomes lizard and tries to get away from human contact when he realizes he is dangerous. Well maybe him and spiderman can fight a bit in the beginning, or spiderman helps him in some way. Say the doc is seeing someone or got injured and knocked out while he was hurt. He has to hurry back to inject a pill to keep him stabalized. But he is too late and say the girlfreind follows him unexpectedly and gets killed accidently by him, he is angry and starts breaking everything. Venom escapes and gets on to him. This could be an ultimate enemy, Not sure if carnage should be in play,give me your ideas.