Those of us lucky enough to have a sibling in our lives know that the relationship is unique. This person shares the same fond memories of your childhood and also any traumas. They are a part of you whether you like it or not, and will be there for you when you need them. Most of the time at least… Because there are other times when all you want is to grab your sibling by the throat and not let go! Of course no one truly goes that far, that is, except for the siblings on this list.

These siblings are not about family values. They’re more interested in taking out the competition! So gather your brothers and sisters and get ready for ten of the worst siblings in horror!

10. The Texas Chainsaw Massacre 2 (1986)

There isn’t a lot to be said about The Texas Chainsaw Massacre 2 that hasn’t already been said. In this film, the Sawyer family is a lot more fleshed out (pun definitely intended), with brothers Robert “Chop-Top” Sawyer and Drayton Sawyer. But not to worry, these siblings are just as deranged as Leatherface himself. However, the brothers seem to care a lot more about family tradition and well murdering than they do about their lumbering brother. After Leatherface, aka Bubba, develops a crush on leading lady “Stretch,” his brothers are quick to call him a traitor to the family. As a follow up to what was basically an art film, the more fun approach really illustrates the Sawyer family dynamic, guts and all.

9. Amityville II: The Possession (1982)

Technically a prequel to The Amityville Horror (1979), Amityville II: The Possession follows Sonny Montelli as the infamous son who murders his family with a rifle. That’s known going in, but the film focuses more on Sonny’s slow descent after being possessed by an entity from the house. Perhaps the most disturbing aspect of the film, though, is Sonny’s inappropriate relationship with his sister Patricia. Patricia struggles with guilt and ultimately, as revealed in its predecessor, falls victim to her brother’s own hand. If there’s an extreme example of terrible siblings on this list, this one is a top contender!

8. The Unborn (2009)

A supernatural twist on sibling rivalry, this film explores not only intergenerational sibling rivalry, but also the Holocaust, possession, exorcisms- this film’s got it all! With the amount of twists and turns that this film takes, I don’t believe I should spoil anything, so suffice to say that there’s a pissed off brother who wants revenge! You’ll have to check this one out to find out what’s really going on!

7. Blood Harvest (1987)

A strange film starring the late Tiny Tim, Blood Harvest is a film about a young woman, Jill, played by Itonia Salchek who returns to her home town only to find her parents missing. Tiny Tim plays the “Marvelous Mervo,” a clown who spends his day, honestly just being a total creep! Arguably, though, the bigger creep appears to be Mervo’s brother Gary who has an unhealthy obsession with Jill. As bodies begin to turn up, Jill and Mervo must investigate and find out who is committing these murders. Of course, since the film lands on this list, I can bet you’ve already guessed who the killer is!

6. Monster Party (2018)

2018’s Monster Party takes the familiar premise of thieves’ plan gone wrong and adds the rich people killing the poor trope. The film is an interesting ride through a night of murder and it’s damn entertaining. One of the killers, however, is not as interested in the murder as the rest of the family and helps the thieves elude the killers, at least until her brother tracks her down. Monster Party is pure murder and mayhem that at one point includes a chainsaw and an underground dwelling disfigured sibling. This features one of the purest examples of sibling rivalry and is worth a watch!

5. The Hills Have Eyes (2006)

One of the first films of its kind in the early 2000s, as part of the so-called “post 9/11” horror. The film takes some jabs at the ideas of patriotism and traditional American values, with the ineffectual patriarch and the mutant cannibals as a result of government exploitation. Of course one of these values is the idea of family togetherness. Perhaps the only prevailing value at the end of the film is the family’s ability to support each other and survive, meanwhile the same is the cannibal’s undoing. One of the cannibals, Ruby, realizes that she no longer wishes to participate in her family’s depravity and turns against her clan. Perhaps the symbolism is only as deep as that, but I seem to always find a different angle on this film on every watch!

4. House of Wax (2005)

Following the trend of “torture porn” on the rise during the early 2000s, this Dark Castle remake of the Vincent Price thriller feels like a nu metal anthem to bring in a new age of horror films. The film stars Elisha Cuthbert (The Quiet), Chad Michael Murray (One Tree Hill), and Paris Hilton (Repo! The Genetic Opera) among others. As a group of friends find themselves in a strange, seemingly abandoned town, a man who owns the local House of Wax appears to want to help the group, but as they begin to go missing, mysteriously similar-looking wax figures appear in the museum. As the film progresses, we learn that two brothers are to blame for the macabre museum. However, this relationship is less than perfect, and the brothers’ history may be too much to overcome.

3. Basket Case (1982)

Frank Henenlotter is a very well known name in B horror and Basket Case presents the story of conjoined twins on a trip to exact revenge against those who have hurt them. Of course, the twist is that the twins have been separated and the “whole” twin wants to build his own life. It’s not thar simple, though, for the other twin who is carried around in a basket and has a darker and more manipulative personality. When Duane, the “whole” twin, lands a date, things go off the deep end quick! A great twist on sibling rivalry, this is a must-see!

2. The Good Son (1993)

Starring Macaulay Culkin (Home Alone) and Elijah Woods (Maniac) in very early roles, The Good Son follows Mark, Wood, a young boy who’s mother has recently passed. When his father is called away on business, he goes to stay with his aunt and uncle and befriends his cousin Henry, Culkin. The more time he spends with his cousin, however, Mark begins to realize his cousin is a sociopath. When his other cousin, Connie, Henry’s younger sister, becomes the focus of Henry’s psychopathic behavior, Mark must decide whether to confront his aunt. Though, the film focuses on the cousins, there are aspects of Henry’s sociopathy that make this film a dead ringer for this list.

1. Blood Rage (1987)

The quintessential sibling rivalry, Blood Rage follows twin brothers Todd and Terry, both played by Mark Soper (White Oleander). When Terry commits a vicious murder at a drive-in, he frames his twin Todd landing him in a mental institution for ten years. During Thanksgiving dinner, Terry and his mother are informed that Todd has escaped. The night progresses filled with murder and lots and lots of not-cranberry sauce! This film takes the concept of the evil twin and makes a fun Thanksgiving slasher with a semi-predictable, yet still satisfying ending.

Whether you love your siblings or hate them, one thing is for certain. You can’t choose your family, but you can choose your relationship with them. If your sibling is anything like those on this list, you may want to start planning your escape strategy!

Did we miss any of your favorite terrible siblings? Will you be watching any of these with your family this Thanksgiving? Let us know over on Twitter, Instagram, Reddit, and in the Horror Fiends of Nightmare on Film Street Facebook group!