When Venom released in 2018, it opened up many doors in the Marvel/Sony Cinematic Universe. It introduced one of the more iconic figures in comic books. At the end of the movie, actor Woody Harrelson made a cameo as Cletus Kasady, who would eventually become the symbiote, Carnage. In the trailer, we see Kasady and how he turns into Venom’s arch nemesis. Take a look at the full trailer below: