As a crime drama built around a serial killer, “Dexter” has to work harder than most shows to deliver villains who feel genuinely threatening. When the central character is already Dexter Morgan, one of television’s most infamous murderers, any antagonist who steps into his world needs to be especially sinister to make an impression.
Luckily, Michael C. Hall’s lethal antihero faces no shortage of monstrous figures across the original series and its follow-ups, including “Dexter: New Blood,” “Dexter: Original Sin,” and “Dexter: Resurrection.” Some of his most persistent adversaries are, understandably, members of law enforcement, but Dexter also crosses paths with killers whose instincts are every bit as deadly as his own — and he often ends up eliminating them. The franchise is packed with deeply unsettling characters, but a few stand out as especially chilling. Here are five of the most disturbing villains from Showtime’s “Dexter.”
5. George King
“Dexter” Season 3 brings in George King (Jesse Borrego), a killer whose horrifying methods more than justify his nickname: the Skinner. King is a relentless and vicious criminal hunting Fred “Freebo” Bowman (Mike Erwin) after Freebo wronged him. But rather than behave like a typical revenge-driven TV thug, King avoids loud threats and flashy intimidation. His preferred approach is far more nightmarish: he captures people who may have information and tortures them for extended periods by slowly removing their skin with a machete.
A former Nicaraguan Contra torturer, George King prizes respect and blade-based brutality above almost everything else. He is not around for long, appearing in only six episodes of “Dexter” Season 3, but his sheer cruelty and apparent pleasure in inflicting pain make him one of the show’s most unnerving threats — and more than deserving of a place on this list.
4. Isaak Sirko
The late Ray Stevenson proved to be a terrific addition to “Dexter” Season 7 as Isaak “Volk” Sirko. A powerful figure within the Koshka Brotherhood, Isaak brings a distinct kind of menace to the series. He moves through the world with the polish of a refined businessman, yet he is more than capable of dispatching almost anyone who gets in his way. With his intelligence, physical capability, and access to enormous criminal resources, he is an opponent no one can afford to take lightly.
Isaak’s conflict with Dexter is deeply personal. He comes after him because Dexter killed his lover, fellow Koshka Brotherhood member Viktor Baskov. What makes Isaak unusual is that his vendetta is not fueled by a simple, irrational hatred of Dexter. He can even speak with him in a surprisingly civil way. The problem is that Dexter unknowingly crossed an unforgivable line when he killed Viktor, placing the two men on opposite sides of a conflict that neither can easily walk away from.
Still, Isaak’s composure and professionalism keep him from ranking higher among the show’s most disturbing villains. He is tremendously dangerous and influential, but he remains controlled and clear-headed. That makes him less erratic than some of Dexter’s other enemies, even if he would likely defeat any of them in a direct fight.
3. Jordan Chase
Jonny Lee Miller is outstanding as one of “Dexter” Season 5’s central antagonists. Miller has long excelled at playing charismatic characters with troubling darkness beneath the surface, including Sick Boy in “Trainspotting,” and he uses that skill to chilling effect here. Jordan Chase appears to be a warm, polished, and widely admired motivational speaker with celebrity status in his field. He seems likable, confident, and highly intelligent. The horrifying truth is that he is all of those things — and something far more monstrous as well.
Chase lives a secret life as a ringleader of terrifying serial killers known as the Barrel Girl Gang. This group of five friends has systematically abused and tortured women for years, which has resulted in 12 murders. Terrifyingly, the five have been at it since they were teenagers, and their cooperation throughout the years has made them a formidable group that poses a potential threat to whoever ventures too close to their periphery.
Chase is in full control of the other members of the gang. This makes him so scary that even other members of his group are unnerved by him, and for good reason. Granted, he may never physically participate in the killings himself, but he is the biggest monster in the Barrel Girl Gang all the same.
2. Brian Moser
Christian Camargo’s Brian Moser is the “Dexter” villain whose connection to the main character is by far the most personal. The first and arguably most memorable serial killer antagonist on the show, the Ice Truck Killer of “Dexter” torments Dexter Morgan both in visions and in person. His murders are as memorable as they come, and “Dexter” Season 1 uses them to communicate that somehow, there are even worse people than Dexter out there. The eventual revelation that Brian is Dexter’s brother and a dark mirror of what the protagonist could have become with a different upbringing is more than enough to send shivers down our spines.
“Dexter” features many memorable and disturbing villains, and Brian is one of the two who belong in the conversation of television’s all-time greats. In most other circumstances, Brian Moser would land at the number one spot with ease. Unfortunately for him, Dexter eventually encounters an even more monstrous villain.
1. Arthur Mitchell
Perhaps unsurprisingly, the top spot holder from our ranking of 12 best “Dexter” villains continues his reign here. There are many shows like “Dexter” out there, but only one Arthur Mitchell (John Lithgow). Both physically and in pure complexity, the Trinity Killer looms head and shoulders above most other villains that “Dexter” introduces. So much of this is because of the surprisingly soulful and simultaneously soulless performance by Lithgow, whose “3rd Rock From the Sun” comedy chops are nowhere to be seen in this all-timer of a bad guy.
Arthur Mitchell is a seemingly perfect family man and an influential community member, who’s secretly a complete monster. He’s locked in a kill cycle of an identical series of murders that he is psychologically forced to do over and over again. Yet he’s no stone-faced beast. He can and very much does show emotion, and he’s far from invulnerable — on the contrary, Arthur comes across as both extremely human and completely inhuman, which only serves to make him all the more terrifying.
Dexter Morgan comes to consider Arthur the most dangerous man he’d ever met, and the Trinity Killer does not disappoint this assessment, either. He’s responsible for some of the most personal losses in Dexter’s life, and every single minute he spends on the screen here leaves “Dexter” viewers no room for doubt about who the most unnerving Dexter antagonist is.