Dexter is the American crime drama centred on Dexter Morgan, a forensic blood-spatter analyst who secretly targets other killers, and the character's calm, methodical persona made him a lasting figure in online edit culture. Short clips emphasising his darker side are reused as a Dexter meme for villain reveals, ironic threats and dramatic character introductions, often cut over unrelated footage to suggest someone is plotting something. Its staying power comes from that instant recognition: viewers already understand the danger before anything happens.