Abby Mills: The Good Girl
- Action Girl: Of a sort. She does manage to kill Henry after all.
- Action Survivor: Makes it to the end of the series along with Jimmy, Shea and Madison.
- Betty and Veronica: The Betty to Trish's Veronica for Henry's Archie. Interestingly, this triangle only exists for Henry.
- Break the Cutie: Loses her mother at eighteen, is sent away from home for her father for reasons he never explicitly makes clear, and struggles to live alone in a new city for seven years. When she finally returns to her childhood home, she struggles to reconnect with her father and high school sweetheart, only to discover her father's been lying to her and the maniac that killed her mother is still alive.
- The kicker? Her best friend is the maniac's son, has been helping him kill all of their friends and family, turns out to be her half-brother, and is in love with her. Abby is forced to kill him, to save herself.
- BrotherSister Incest: Averted, much to Henry's dismay.
- Childhood Marriage Promise: She made one with Henry. That went well.
- Dark and Troubled Past: Her mom (along with several other people) was murdered by John Wakefield in 2001, and her relationships with both her father and boyfriend were (almost) completely destroyed in the process.
- Final Girl: Let's see... 25-year-old virgin? Check. Pretty young lady? Check. Incorruptible Pure Pureness factor? Check.
- Friend to All Living Things: Stops to admire a doe when jogging in the woods. She doesn't take kindly to the discovery that Jimmy has taken up hunting as a hobby, and saves the deer. For all the good it does.
- Nice Girl: Polite, modest, and always ready to sit down with her friends if they need a shoulder to cry on.
- Pinball Protagonist: Despite being the focus of the story, she actually doesn't do much aside from uncovering information and looking shocked at the events happening around her... until the events of the finale, where she kills Henry.
- Roaring Rampage of Revenge: After her father dies and Wakefield reveals himself as Not Quite Dead Abby outright declares she intends to kill him.
- Shipper on Deck: For Henry and Trish, despite Trish's friends' assumptions that Abby and Henry may have had something more going on.
- Sole Survivor: Sort of. She's one of the only four survivors of the massacre.
Henry Dunn: The Groom
- The Ace: Confident, charismatic, athletic and a natural leader that his friends look up to and admire, especially when things get serious and bodies start turning up everywhere.
- Broken Ace: He's severely mentally disturbed, and engages in a long-term scheme to murder all his own attachments, including his father and accomplice, in order to live out a childhood fantasy.
- Alas, Poor Villain: The writers intentionally made his death extremely sad.
- Ax-Crazy: In addition to being a psycho in general, he literally uses an ax on Reverend Fain.
- Big Bad Duumvirate: With John Wakefield, his dad, until...
- Big Bad: He becomes this after killing his father.
- Big Brother Instinct: Towards J.D. Henry blames himself for a lot of the tragedy that occurred in his brother's life. He ends up killing J.D. with his own hands. Possibly to protect him from Wakefield.
- BrotherSister Incest: Tries to pull this off with Abby. It doesn't really work out for him.
- Hero Killer: Seeing how he's one of the two killers, he directly murders over half the cast.
- Impaled with Extreme Prejudice: How Abby kills him.
- The Leader: Takes over as the unofficial leader of the group after things really go bad. In reality, he's orchestrating everything with Wakefield.
- Nice Guy: What he projects himself as, at least.
- Villain Protagonist: For the majority of the series he gets the second most focus behind Abby. Then we learn the truth about him..
- Villainous Breakdown: Has one when Abby screams that she doesn't want him. You can tell he's crossed the Despair Event Horizon.
- Walking Spoiler: No kidding.
- Would Hurt a Child: Claims that Madison (as well as her mother) escaping the island "wasn't part of the plan", implying that he would have had no qualms killing her along with everyone else.
- Yandere: Big time.
Trish Wellington: The Bride
- Betty and Veronica: The Veronica to Abby's Betty. Interestingly, this triangle only exists to Henry.
- Blood-Splattered Wedding Dress: When Henry kills her.
- Break the Cutie: Trish shuts down emotionally after watching her father die.
- Character Death: Henry stabs her in the side.
- Character Development: Her father's death pushes Trish into an almost catatonic state. Abby talks her out of it, though, and Trish ends up becoming very proactive in the show's second act.
- Daddy's Girl: She is devoted to her father and is much more upset than Shea when he dies.
- Final Girl: Averted, but she makes it pretty far regardless and is the last female victim.
- Hidden Depths: She initially appears as a not-so-intelligent rich girl with overly romantic ideals. Turns out she can take care of herself, use a shotgun without much trouble, and is one of the characters who truly takes charge in the last act.
- The Leader: When Henry wasn't with the group Trish would take over as unofficial leader. She even acts as a big sister towards Shea, even though Shea is older.
- Ms. Fanservice: Doesn't flaunt it around like Chloe does, but it's still there.
Chloe Carter: The Flirt
- Beta Couple: Half of it, with Cal.
- Better to Die than Be Killed: She kills herself by deliberately falling from a bridge after Cal is murdered, telling Wakefield he can't have her.
- Defiant Captive: to Wakefield. although she initially Ain't Too Proud to Beg.
- Face Death with Dignity: When she's cornered on a bridge by Wakefield and has already seen him slaughter Cal...she looks the killer dead in the eye, calmly tells him "You can't have me," and deliberately lets go of the handrail so that she falls to her death.
- Hidden Depths: Much cleverer than she appears, and not quite as vapid.
- Ms. Fanservice: She ends up in her underwear exponentially more than any other woman in the show. Which makes sense, since she's 'the flirt' and all that.
- Nightmare Fetishist: She has a fascination with the Wakefield murders, though once she's actually surrounding by Wakefield murders she becomes quickly disenfranchised.
- Single Woman Seeks Good Man: It's implied that she loves Cal so much because he treats her like a real person, unlike her numerous other boyfriends.
- The Tease: Flirts with Marty and Sully but is really devoted to Cal.
Cal Vandeusen: The Outsider
- Beta Couple: Half of it, with Chloe.
- Hair of Gold, Heart of Gold
- Impaled with Extreme Prejudice: How Wakefield kills him.
- Lost Wedding Ring: Well, engagement ring. Chloe unwittingly tosses it into the ocean in the first episode and it isn't recovered until Episode 6.
- The Medic: Patches up Charlie's spear-wound and Henry's injured leg, though he professionally works only on dead people.
- Nerds Are Sexy: His appeal. Both Chloe and Stacey the Stripper point it out.
- Nice Guy: Easily one of the nicest characters on the show.
- Odd Couple: Eventually becomes friends with Sully, who saves his life, despite spending the first few episodes as rivals for Chloe's affections.
- Say My Name: He calls for Chloe all over the place in "Splash". Her name is also his last word.
- Senseless Sacrifice: He sacrifices himself so that Chloe will have time to run from Wakefield, but she still kills herself moments later.
- Took a Level in Badass: "I am a doctor and I am ordering you to get to the boat!"
Jimmy Mance: The Old Flame
- Not Quite Dead: He is presumed dead in the marina explosion, but this is disproved not long after when his unconscious body is delivered to the Cannery.
- Odd Friendship: Two, actually. He's friends with Charlie, who didn't really like him when he was dating Abby. He's also friends with local Jerkass Shane who he works with and defends at all costs.
- Nice Guy: Amiable and friendly, he gets along with just about everyone he has screentime with, and sticks by his friends to no end. Mixes with Dogged Nice Guy in his pursuit of Abby.
- Promotion to Opening Titles: In Episode 5.
- Red Herring: He is the third character to be outright made a suspect, and it's implied to be the only reason Wakefield let him live that long.
- Satellite Love Interest: He doesn't really have much personality outside of wanting to get back with Abby. Shane even calls him out on it once or twice.
- The Scapegoat: Henry intended him to serve this purpose, signing a confession to the murders so he and Abby could live their 'happily ever after' on the island, presumed dead.
- Single-Target Sexuality: He hasn't dated a single other girl in the seven years since Abby left.
- Sole Survivor: Sort of. He is one of four survivors of the series, along with Abby, Shea, and Madison.
Sheriff Charlie Mills: The Sheriff
- The Alcoholic: Driven to drink after his wife's death. Apparently he was an angry drunk and blamed Abby for what happened, something he now regrets.
- Dirty Cop: Put Wakefield away on false charges to keep him away from stalking his wife which caused his rampage.
- For Your Own Good: His initial justification for sending Abby away, which he later regrets.
- My Greatest Failure: Sending Abby away after Sarah's murder. Also, sending Wakefield to jail on inflated charges, unwittingly leading to the first massacre.
- Neck Snap: Wakefield's deathtrap hangs him.
- Odd Friendship: With his daughter's ex-boyfriend Jimmy. They meet every week for breakfast.
- Reasonable Authority Figure: He mostly defies the horror movie cliche of Police Are Useless, although this is zigzagged at points.
- Room Full of Crazy: His attic, where he keeps evidence and paraphernalia relating to Wakefield and Wakefield-related murders.
- Rube Goldberg Hates Your Guts: Wakefield puts him in an elaborate deathtrap that is designed to snap his neck. It works.
- Police Are Useless: Zigzagged. Charlie is intent on solving the murders, but witholds important information Wakefield being Not Quite Dead from the other characters, which leads to several deaths.
- Promotion to Opening Titles: In Episode 5.
- The Sheriff: Obviously.
Thomas Wellington: The Father of the Bride
- Corrupt Corporate Executive: Not in his actual business, per se. It's just that he applies a lot of the same tactics to his family life.
- Cassandra Truth: Tells Trish in Episode 5 that he doesn't trust Henry based on "instinct". He's absolutely correct in these assumptions.
- Death by Looking Up: Looks up just in time to see the head spade come down on his face.
- Give Away the Bride: His role in the wedding ceremony of course, and the manner of his death in the rehearsal.
- Impaled with Extreme Prejudice: His death is this trope.
- Jerk with a Heart of Gold: Very cold to most people, but he's fiercely protective of his daughter. He also becomes a lot more likeable in retrospect when you realize he was totally right about not trusting Henry.
- Overprotective Dad: Crosses over with Well-Intentioned Extremist. He is so driven to protect Trish that he sets out to break up her wedding by reuniting her with her Jerkass ex-boyfriend.
- The Patriarch: Of the Wellington clan. One of the reasons his death is so jarring.
- Sacrificial Lion: His death is a major turning point in the show, and it lets the characters know there's a killer on the loose.
- Surprisingly Sudden Death: His death is very sudden and shocking, especially to the characters since by that point they didn't even know there was a killer on the island.
Hunter Jennings: The Other Man
- Affably Evil: Not "evil" per se, but he's absolutely charming and handsome to people who don't know him well.
- Asshole Victim: Definitely had it coming.
- Boom, Headshot!: Courtesy of a rigged shotgun.
- Chekhov's Gun: After he dies, the discovery of his boat sets off a subplot involving Malcolm and the rest of the groomsmen.
- Filler: His character and its associated subplot is only around for the first three episodes (and very briefly in the first two, at that). Hunter's whole character is a Red Herring, and his death only serves to set up the groomsmen bag of money storyline.
- Jerkass: He's a total asshole.
- Mauve Shirt: Dies in Episode 3.
- Mock Millionaire: Originally supposed to be this, but the scene revealing it was cut for time. Hunter family was supposed to have disinherited him for some indiscretion, which would have necessitated his dependence on Mr. Wellington's money. Katherine would have showed Thomas this information, which would have led to Hunter's expulsion from the island.
- Narcissist: He loves no one but himself, and really couldn't care less about Trish, so long as he gets paid.
- Noodle Incident: Whatever exactly happened 'in college' that led to Trish breaking up with Hunter and returning to Henry. It was presumably very unpleasant.
- Stalker Without a Crush: Crosses over with Only in It for the Money.
- What Happened to the Mouse?: Something of a meta example. He is the only character among the 'early outs' to never be mentioned after his death. Probably because so few characters knew he was on the island, and the ones who found his body didn't know who he was.
J.D. Dunn: The Black Sheep
- Bad Butt: He doesn't really do anything 'disturbed' or 'crazy' unless he's provoked. Outside of that, the worst he really does is set off firecrackers with a nine-year-old girl.
- Bar Brawl: With Shane in Episode 1. Abby breaks it up.
- Birds of a Feather: With Kelly.
- Black Sheep: A truly sad example. Everything he's accused of has actually been done by his brother, who is the seemingly "normal", popular, and well-liked one, not to mention the fact that he's not even his brother
- Cain and Abel: He is murdered by his own brother. Although technically Henry isn't really his brother...
- Character Death: Henry stabs him.
- Clear My Name: When he becomes a chief suspect in the murders, he leads a short-lived investigation with Abby and Henry to prove that Wakefield is still alive and killing again.
- Gutted Like a Fish: How he dies, and on the docks to boot.
- Icy Blue Eyes: He has them.
- Knife Nut: He carries a switchblade with him, though he never uses it.
- Loners Are Freaks: A tragic part of his character.
- Odd Friendship: With Madison. He's her only friend on the island. Well, besides Wakefield...
- Red Herring: The second character to be explicitly made a suspect.
- Suicide Pact: Had one with his girlfriend. It didn't exactly work however, and J.D was saved while his girlfriend died.
- Tattooed Crook: While not a 'crook' per se, J.D is covered in tattoos to emphasise his rebellious antisocial nature.
- Troubled, but Cute: He's still pretty likable despite his issues.
- Used to Be a Sweet Kid: According to the flashback in Episode 13.
Christopher "Sully" Sullivan: The Best Man
- The Casanova: He chased Trish in college, chases after Chloe in the early episodes, clearly wouldn't mind spending some time with the other bridesmaids, has been trying to sleep with Abby for years and even snags a quick Now or Never Kiss from Nikki. However...
- Casanova Wannabe: He never actually gets together with anyone, despite his efforts. Of the principle male characters he's the only one without a love interest of some kind.
- Character Development: He has the most definite character arc of the 25 characters. As a matter of fact, he gets more character growth than some of the principles.
- Childhood Friends: With Henry. One of the reasons Henry's confession breaks him so badly.
- Dirty Coward: When Madison is kidnapped, Sully is the most vocal about leaving her behind in favor of going home, going so far as to attempt escape with Cal, Chloe, and Beth.
- Four-Temperament Ensemble: Among the groomsmen, he's Choleric.
- Fratbro: At first, but he develops Hidden Depths.
- Get A Hold Of Yourself Man: Trish does that to Sully when doesn't care about Madison's life.
- Heterosexual Life-Partners: With Henry, and to a lesser extent Danny.
- In the Back: Literally and figuratively by his best friend
- Jerkass: At first.
- The Lancer: In the latter half of the show, Sully takes this role, occassionally sharing it with Jimmy.
- The Leader: Of the groomsmen.
- Redemption Equals Death: He lets Shea and Madison leave the island without him, intending to stay behind until Henry gets back. Ironically, Henry is secretly the murderer and ends up killing him.
Marty Dunn: The Uncle
- Briefcase Full of Money: Marty brings a bag of $250,000 dollars to the island, which changes hands several times following his death.
- In Episode 13 Henry reveals that the money was supposed to be for Malcolm to help him start up his brewery. He planted the bag on Hunter's boat with the intent of Malcolm finding it, just For the Evulz.
- The Casanova: Very much a skirt chaser. He's only shown on screen with Chloe, but he's apparently such a hit with the ladies that a random fling is a believable enough excuse to explain his absence once he's dead.
- Character Death: Wakefield ensures that he doesn't last the first episode.
- Cool Old Guy: A mild example, but a good one nonetheless
- Cool Uncle: To JD and Henry. Well, actually only JD
- Dead Star Walking: One of the biggest names in the cast, he's dead by the end of the first episode.
- Exact Eavesdropping: He overhears Thomas conspiring with Hunter about breaking up the wedding, making him one of a very select group of people who knew Hunter was on the island. Of course, He's killed that same night, before he can do anything about it.
- Floorboard Failure: As he's crossing a footbridge in the woods, the boards suddenly give out underneath him, allowing him to be neatly cut in two.
- Foil: To Mr. Wellington.
- Half the Man He Used to Be: Bifurcated on a bridge, thanks to John Wakefield
- Honorary Uncle: He insists everybody call him 'Uncle Marty', whether they like it or not.
- Large Ham: Probably why he's a fan favorite despite only appearing the the first episode.
- Incoming Ham: His first scene has him show up with a Mariachi Band, doing a Mexican hat dance, screaming "Olé!" at the top of his lungs and declaring that "For the entire week, it's gonna be Uncle Marty for everyone!"
- Life of the Party: See Incoming Ham.
- Red Herring. Everything to do with his character, really. The bag of money, the gun, his business in 'sales', his determination to see the wedding happen... This makes his death in the first episode all the more shocking.
- Secret-Keeper: A possible interpretation is that Marty was the only one who knew that Henry was adopted. It could very well explain why he was killed so early on, before suspicion could take root.
- We Hardly Knew Ye: The first of the 25 major characters to die.
Shea Allen: The Maid of Honor
- Action Survivor: Survives to the end of the series, along with her daughter, Abby, and Jimmy.
- Break the Cutie: By the end of the series she's lost her father, husband, stepmother, sister, and many of her close friends.
- The Generic Girl: She doesn't really get a great deal of depth.
- The Load: Doesn't contribute a whole lot to the group, although unlike her daughter she never gets any Nice Job Breaking It, Hero! moments.
- Housewife: Is implied to be this, as her husband works a very demanding corporate job.
- Mama Bear: Very protective of Madison, to the point where she unwittingly hinders several important revelations in the third act.
- Missing Mom: Like Trish, her mother died a few years before the story starts. She isn't quite as resentful of her new stepmother Katherine, though.
- Proper Lady: Refined, elegant and very polite, contrasted with her sister less proper sister Trish.
- Slip Knot Ponytail: A tamer variation. As the situation worsens, Shea's very severe ponytail begins coming undone. [[spoiler: By the time she escapes the island, it's a wild, tangled mess].
- Sole Survivor: Sort of. She's one of the only four survivors.
- Trauma Conga Line: A particularly brutal one, which crosses into Take That, Scrappy! for some fans. Within a space of 24 hours she watches her father die, learns about her husband's affair with her stepmother, discovers her daughter is kidnapped and learns that her husband is dead and her daughter is being held for ransom.
Richard Allen: The Brother-in-Law
- Asshole Victim: While he wasn't the biggest asshole on the show, he was definitely marked for death after his affair was revealed.
- Bondage Is Bad: Richard isn't exactly portrayed in a sympathetic light, and his BDSM session with Katherine in Episode 4 is portrayed as something quite sinister.
- Casanova Wannabe: He has an implied flirtation with Lucy in Episode 2 and quite noticeably is oogling Chloe under Cal's nose in Episode 3. His efforts get him nowhere, which undoubtedly fuels his inferiority complex.
- Divorce Assets Conflict: Richard was clearly anticipating custody troubles with Madison after the affair was exposed. He's on the phone with his lawyer when he is killed.
- Extreme Doormat: Is convinced Thomas sees him this way. Judging by one conversation between Thomas and an elderly wedding guest in Ka-Blam, he may be right.
- Impaled with Extreme Prejudice: Henry shoots him with a harpoon gun.
- Jerkass: He's quite the asshole, cheating on Shea with little regard to how it'll affect her and his daughter.
- Jerk with a Heart of Gold: A possible interpretation of his character, as his love for Madison is genuine.
- Killed Mid-Sentence: Richard is harpooned while talking to his lawyer on the phone. The killing blow cuts him off, apparently as he was discussing obtaining shared custody of Madison.
- Red Herring: Briefly becomes a suspect, although these concerns are put to rest when he dies in episode 6.
- Revenge: His reasons for sleeping with Katherine are mostly rooted in sticking it to Thomas rather than betraying his wife.
- Villainous Rescue: When he saves Trish from the closing pool in Episode 4. This crosses over into Deus ex Machina as he sort of just comes out of nowhere with an unsettling rapidity.
- What Happened to the Mouse?: The articles on the Wakefield murders he requested from Harper's Globe. Katherine shows them to Charlie in Episode 6, which suggests Richard might be the Wakefield copycat. However, he dies the same episode and the articles are never brought up again.
Madison Allen: The Flower Girl
- Action Survivor: Makes it out alive.
- Break the Cutie: By the end she's lost almost everyone close to her.
- Cannot Spit It Out: She knew Wakefield was alive from the beginning, but doesn't reveal anything until it's too late. She also lies to everyone on Wakefield' s orders, turning everyone against Sheriff Mills because it's part of 'the game'.
- Creepy Child: She can come off as really creepy, to the point where it seems like she knows more about what's going on than the others.
- Creepy Monotone: She slips in and out of one throughout the series.
- Dead Person Conversation: In Episode 4, Madison claims that 'the spirits' told her there wasn't going to be a wedding. However, it is more likely that it was Wakefield she was talking to, and she merely believed she could talk to ghosts.
- Kids Are Cruel: She's awfully spiteful beneath all of her Creepy Child tendencies. She kills small animals, rips up flower beds and, according to Katherine, often hides from her parents to get attention.
- The Load: Not only is she useless, but she causes some problems as well (see Nice Job Breaking It, Hero!).
- Nice Job Breaking It, Hero!: Caused several deaths by withholding information from the group because she was "scared".
- No Social Skills: She is very forthright and direct, when she's not withholding life-saving information, as is most apparent through her friendship with J.D.
- Not Now, Kiddo: When the gang is holed up in The Cannery, Madison sees Wakefield approaching. She tries to warn the others but gets this response. Nikki ends up dead not a minute later.
- Sole Survivor: Sort of. She's one of the only four survivors.
- Tagalong Kid: The only child in the cast.
Katherine Wellington: The Stepmother
Thomas's second wife, barely older than Shea. Beautiful, confident and with a warm, self-effacing personality, Katherine is the cut-out image of the perfect trophy wife. And, though she may be comfortable playing accessory to a wealthy businessman, Katherine has deeper desires that her money and influence can't quite satisfy. After her affair with Richard is exposed, Katherine is shunned by her stepdaughters and most of the rest of the party. She is stabbed in the back and left to bleed out in Seep.
- The Atoner: After her affair is exposed, Madison is kidnapped and Richard is found dead, Katherine does try a few times to make up for her crimes against her stepdaughters. She helps Trish and Shea make tea, tries to assure her that Madison will be found, and attempts to keep Shea from going out and doing something rash in the search for her daughter, to no avail.
- Bondage Is Bad: While Katherine isn't as outright vilified for her part in the affair, she is still scene as an object of disdain by Trish, and her BDSM session in the basement is portrayed in a sinister manner.
- Defrosting Ice Queen: One interpretation of her softer, gentler characterization once her affair is exposed.
- Dumb Struck: Evidently the case after watching Thomas being impaled during the wedding rehearsal. Katherine is in a state of mute shock, sitting still while everyone else goes outside. Sheriff Mills has to help her stand.
- In the Back: Is stabbed in the back with pruning shears by Henry, through a couch no less.
- Jerk with a Heart of Gold: Despite her affair with Richard, She genuinely cares about Thomas and Madison. She tries to explain this to Trish and Shea, but they rebuff her for obvious reasons.
- Killed Offscreen: Is murdered offscreen by Henry, apparently with Shane in the room and none the wiser until he turned around and saw her bleeding out.
- Lady Drunk: She hits the bottle hard after the affair is exposed.
- Lonely Together: With Shane in Seep. They share a drink at the bar and evidently got along well enough to keep each other company while everyone was running around not trusting them. Shane is the only witness to her death because of this.
- Mauve Shirt: She never really gets much screentime or personality before dying.
- Indeed, while Richard's motivations for engaging in the affair are stated clearly to be Revenge against Thomas for mistreating him, Katherine's motives are never even brought up, though it is implied she may simply have been bored in her marriage, and Richard was just an outlet for excitement.
- MayDecember Romance: With Thomas, though the 'romance' part is debatable.
- According to the list of bridal party members Shea gives to Karina for the bachelorette party, Katherine is barely a week older than Shea.
- Trophy Wife: Her whole aesthetic, of course.
Danny Brooks: The College Buddy
A groomsman and, like Sully, Malcolm and Booth, one of Henry's fraternity brothers. Danny is less easygoing than Sully and Malcolm, and more drive and confident than Booth. He likes to get along with people,and it would be pretty difficult to get on his bad side.
- Black Dude Dies First: Totally averted. He dies in the penultimate episode.
- Despair Event Horizon: Experiences this when he, Abby and Henry return to the Cannery to find Nikki and Shane dead, and the others missing. Abby encourages him to keep on going.
- Dying Moment of Awesome: He does not go down easy. Wakefield even acknowledges that he put up a good fight.
- Eye Scream: Wakefield impales him through the eye with a memo holder.
- In the previous episode, Danny is almost run through the eye with a metal pole while he and Sully barricade the tunnel entrance in the Candlewick kitchen. It's possible Wakefield improvised Danny's eventual death because of this moment.
- Four-Temperament Ensemble: Among the groomsmen, he's Phlegmatic.
- The Generic Guy: Sadly, although Danny is around for a while he never gets much personality aside from being nice.
- Heroic Sacrifice: Fights Wakefield to allow Shea and Madison to escape.
- The Lancer: Of the groomsmen, next to Sully as The Leader, Malcolm as The Funny Guy and Booth as The Smart Guy.
- Laser-Guided Karma: He confides to Henry that he believes the wedding party is on the receiving end of this for taking the bag of money off the boat. Henry rebuffs this, saying he doesn't believe life works that way. Henry would know, of course.
- Nice Guy: One of the nicest characters on the show.
- Token Minority: At least he doesn't die first.
- Unstoppable Rage: He goes berserk when Malcolm confesses to accidentally getting Booth killed.
Malcolm Ross: The Hustler
- Aborted Declaration of Love: Seems to be what happens in Thrak, Splat, Sizzle, when Malcolm is too busy trying to hide the money to spend a minute or two talking with a tragically disappointed Beth.
- Disposing of a Body: When Booth shoots himself, Malcolm buries him in the woods. He ends up being killed before he can reveal where he put the body.
- Four-Temperament Ensemble: Among the groomsmen, he's Sanguine.
- The Funny Guy: Of the groomsmen, next to Sully as The Leader, Danny as The Lancer and Booth as The Smart Guy.
- Greed: Malcolm is so consumed by his debt and his lack of success in business that he clings to the ill-gotten $250,000 even after his pursuit of it causes Booth's death. However he attempts to justify it afterward, Malcolm did all he could to keep the truth quiet, in hopes he could keep the money.
- HeelFace Door-Slam: Just when he decides to man up and burn the money, he is murdered.
- I Did What I Had to Do: He is deep in debt and uses it as an excuse to take the suitcase full of money in Hunter's boat.
- Life of the Party: He brings his own beer, is full of laughs, and looks forward to the debauchery of the bachelor party, though he is unfortunately unable to attend it.
- My God, What Have I Done?: He is plagued with guilt after accidentally getting Booth killed.
- Nice Job Breaking It, Hero!: So many problems could have been avoided if he didn't take the bag of money from Hunter's boat. Namely, Booth wouldn't be dead.
- Off with His Head!: His head is chopped off and thrown into the fire.
- Stepford Smiler: His funny guy, party animal veneer is all a projection to hide a very desperate and depressed man who just can't get a break financially.
- There Is No Kill Like Overkill: He is hacked to pieces by Henry, and his head and limbs are tossed into an incinerator.
- Turtle Power: Malcolm's home-brewed beer, Sacred Turtle.
Joel Booth: The Nerd
- Butt-Monkey: Things really don't go well for him.
- A Death in the Limelight: Is a bit character in the first three episodes, and then finally gets a POV in Bang...where he dies.
- Forgotten Fallen Friend: Of a sort. After Malcolm confesses the truth of Booth's death to Sully and Danny, they arrange to tell the Sheriff. Malcolm is killed shortly afterward, and neither Sully nor Danny ever bother mentioning Booth's death to anybody else.
- Four-Temperament Ensemble: Among the groomsmen, he's Melancholic.
- Hollywood Nerd: Has all the qualities of a stereotypical nerd.
- Hypochondria: His character bio styles him as one, though the only element of hypochondria Booth displays is his seasickness.
- I Just Shot Marvin in the Face: He accidentally shoots himself in the leg with his gun when Malcolm surprises him. While he doesn't feel anything at first, he abruptly collapses and bleeds to death.
- Mauve Shirt: Little more than a background character in the first three episodes, he gets some characterization in Bang, before dying.
- Nervous Wreck: Becomes one during the debacle with the money.
- Only a Flesh Wound: Averted; while it took a minute for him to die that shot to the leg was fatal.
- The Smart Guy: Of the groomsmen, next to Sully as The Leader, Danny as The Lancer and Malcolm as The Funny Guy.
Beth Barrington: The Single Girl
Trish's college roommate. A scholarship student with not a lot of private means, Beth is also quieter and more withdrawn than her boisterous, beautiful friends. Regardless of their social differences, however, Beth is comfortable in the extravagant world of the Wellingtons, though she can't always hide how much she'd like a piece of it for her own.
- Aborted Declaration of Love: Seems to be what happens in Episode 7, when Beth comes up to Malcom's room to thank him for comforting her, and Malcolm is too busy trying to hide the money to spend much time with her.
- Break the Cutie: Happens in full force post-headspade. Once the murders come to light, Beth is struggling to hold it together, with her best friend Lucy missing and doesn't know anyone enough to confide in. She becomes desperate to leave the island but is forced to stay when Madison goes missing.
- The Chick: Once the situation takes a turn for the worse, Beth begins hanging around the groomsmen, possibly because of her crush on Malcolm.
- Formerly Fat: according to one of the deleted scenes, when she's spending time with Malcom.
- The Generic Girl: See Red Shirt.
- Half the Man He Used to Be: Danny only finds half of her body, minus an arm.
- Nice Girl: From her limited screentime, she seems to be pretty pleasant.
- Killed Offscreen: She goes missing and her bisected corpse is later found by Danny.
- Living Prop: She appears in all nine episodes before her death, but has no lines in two of them and minimal roles in every other episode.
- She has a brief story arc regarding a flirtation with Malcolm, and a growing sense of despair as the situation on the island gets worse, but neither one comes to anything.
- Red Shirt: The biggest on the show. She sticks around for a good portion of the show but despite this, she practically blends into the background and has literally no personality or discernible character traits. It became a Memetic Mutation in the fandom to say "who the hell is Beth?" when she goes missing.
- Shrinking Violet: A possible in-universe explanation for her always hanging about in the background, never saying very much. She's only sort of comfortable around Trish and Lucy, and it takes her awhile to get used to the others.
- Tomboy and Girly Girl: The Tomboy to Lucy's Girly Girl, if only for the fact that she plays around with the groomsmen more than the other ladies.
- Trail of Blood: When Beth is discovered to be missing, the others follow implausibly long trails of blood into the bootlegging tunnels, inevitably leading to the crawlspace she died in.
- It's suggested that not all of the blood is Beth's own, and Wakefield used other samples as red herrings just to split the groups up.
- What You Are in the Dark: she briefly does succumb to panic try to Screw This, I'm Outta Here! with Cal, Chloe and Sully, but changes her mind, along with Chloe, after being reminded by Cal that they'll be dooming Madison if they go.
Lucy Daramour: The Socialite
A bridesmaid, and Trish's best friend from growing up. The Daramours and Wellingtons used to summer on the island together, though Lucy never developed as much of an attraction to the place as Trish did. Lucy is confident, beautiful and not afraid of showing it off, despite her happy relationship with her boyfriend back home.
- Canine Companion: Her teacut/poodle mix, Gigi. She carries her around wherever she goes.
- Dumb Blonde: Averted. Of Trish's friends, Lucy is the only one who ever sits her down and talks to her heart-to-heart, despite being the first of those friends to bite it.
- Friend to All Living Things: Is very attached to her dog.
- Forgotten Fallen Friend: Her absence isn't even mentioned at the bachelorette party.
- This is due to a deleted scene that would have shown Lucy planning to visit her boyfriend on the mainland briefly, before returning for the wedding. However, it was cut so Lucy's absence remains unnoticed for three episodes after her death.
- Hidden Depths: Her character bio mentions that she is studying law.
- Kill It with Fire: Wakefield sets her on fire.
- Polyamory: Believes in this principle. When she contemplates having a fling with one of the groomsmen, she tells Beth that 'eating ain't cheating'. Whether or not her boyfriend Ryan approves of this sort of thinking remains a mystery.
- Socialite: Her 'nickname' in the show's advertising. Lucy is a social butterfly, equally comfortable with the rich and privileged Trish and the lower class Beth.
- Tomboy and Girly Girl: The Girly Girl to Beth's Tomboy.
- We Hardly Knew Ye: The only memorable traits she had was her tiny dog and her fiery death in the second episode. Even the dog stuck around much longer than she did.
- Uncertain Doom: One of the only characters whose death has even the slightest ambiguity, as she's last seen still alive, thrashing around while on fire, but isn't engulfed to the point where she couldn't have put out the flames by stopping, dropping and rolling. Even if she did survive the initial fire though, she would have spent days exposed, suffering from her burns, days in which no one found her, making her survival extremely unlikely.
Shane Pierce: The Townie
- Absentee Actor: Is absent for a few episodes after getting arrested, though he's back by Episode 8.
- Asshole Victim: Surprisingly averted. He manages to redeem himself in his last moments.
- Ax-Crazy: Has shades of this after Kelly dies. and he thinks JD is responsible.
- The Bully: To JD.
- Domestic Abuse: Toward Kelly, before and after their breakup.
- Heroic Sacrifice: Fights Wakefield so that the others can get away. After being impaled, he uses his last ebb of life to distract Wakefield once more so that Trish and Chloe can sneak through a window.
- Redemption Equals Death: All of this was pretty surprising considering how much of a dick he had been earlier.
- Impaled with Extreme Prejudice: His ultimate fate, though...
- Jerkass: He's an aggressive jackass to just about everyone.
- Kick the Dog: Mocks JD's suicide attempt and the death of Abby's mother.
- Libation for the Dead: When Jimmy is presumed dead in the marina explosion Shane helps himself to a bottle of scotch at the Cannery. When Henry asks him why he's drinking it if he doesn't like it, Shane says that Jimmy drank scotch and he's drinking in his memory.
- Lonely Together: Shane and Katherine share a few drinks at the Candlewick bar in Episode 9, shortly before Katherine's death.
- Odd Friendship: With Jimmy, considering Jimmy's a Nice Guy and Shane's a Jerkass.
- Wrong Genre Savvy: Shane thinks hes the Anti-Hero of a revenge thriller for a while technically it is a revenge thriller, but the villains revenge and not his.
Kelly Seaver: The Outcast
- Broken Bird: Her mother's death kicked off a series of misfortunes for her, making her a local outcast and leading to several suicide attempts.
- Cassandra Truth: Everyone thought she was crazy when she claimed Wakefield was still alive.
- Domestic Abuse: Was abused by her boyfriend Shane, before and after they broke up. When Nikki tried to convince her to get a restraining order against Shane, Kelly refused.
- Goth: Her wardrobe and makeup reflect this.
- Hope Spot: Abby agrees to let Kelly live with her in L.A., she hooks up with J.D., and even calls this the best day ever. Nikki finds her hanging from the rafters that same night.
- Killed Offscreen: She is hanged by Wakefield and her body is found hours later.
- Loners Are Freaks: Probably why she quickly hits it off with JD.
- Never Suicide: Her death is initially assumed to be a suicide, but it becomes clear that she was murdered.
- Nightmare Fetishist: Possibly literally? After her mom was murdered by Wakefield she thrust herself into an ugly abusive relationship with Shane, and gave herself tattoos all over with messages begging for him to take her too.
- We Hardly Knew Ye: She received a lot of focus in the first two episodes, but ultimately dies at the end of episode 2 and is basically forgotten immediately.
Nikki Bolton: The Biker Chick
- Absentee Actor: She appears sporadically in the first few episodes, then vanishes almost completely once the situation gets serious. She returns in episode ten, only to be killed in the next episode.
- Badass Biker: The impression she gives off, although we never really see her in action.
- The Bartender.
- Flat Character: Despite being Abby's childhood friend, she never really has much relevance to the plot they way Jimmy or Shane do. She's got nothing to do with the wedding so she only ever shows up if the plot happens to bring someone to The Cannery.
- Impaled with Extreme Prejudice: How Wakefield kills her.
- Informed Attribute: The advertising for the show called her 'The Biker Chick' of the group, but she doesn't seem to own a bike and never even mentions one. But "Waitress at a fishing pub" probably doesn't have the same ring to it.
- Now or Never Kiss: When Sully and Cal are leaving to find the sailboat, Sully gives Nikki one of these. It is there first interaction and nothing comes of it since Nikki is killed before Sully returns.
- Unwitting Instigator of Doom: Her arrival at The Cannery in Episode 10 is this for Maggie as it inspires her that the killer isn't after locals, leading to Maggie's abandonment of the group and imminent death.
Maggie Krell: The Wedding Planner
- Beware the Nice Ones: Charlie calls her a 'pitbull' at one point, noting her determination and drive beneath her peppy exterior.
- Determinator: In her efforts to make sure the wedding goes along without a hitch, she can be overbearing and oblivious to others. It's unsure whether or not she means to come off as abrasive, but both Charlie and Henry find her overwhelming at different times.
- The Generic Girl: One of several characters we never really learn much about.
- Hidden Depths: Though Maggie is shown to be a caring and considerate older woman, such as when she comforts Julia in the wake of the wedding rehearsal, and when she expresses relief that Madison has been rescued, she shows quite a more selfish side when it appears she can leave the group without being targeted. She's wrong, and dies for it.
- Hope Spot: For Maggie, Nikki's arrival at The Cannery in Episode 10 was this, as it indicated to her that the killer wasn't interested in the locals. In abandoning the group to this theory, however, Maggie turned out to be sorely mistaken.
- Killed Offscreen: After abandoning the group under the impression that she's safe, her hanged corpse is dropped from the roof minutes later.
- Nice Girl: She's very friendly, though it is possible this a persona she puts on as part of her job.
- Too Dumb to Live: Really, Maggie? Leaving the group based on a theory? It's no surprised when she is killed.
Deputy Patrick Lillis
- Played By: Nicholas Carella
- Back for the Dead: Lillis vanishes from the series after J.D. is arrested and only reappears in episode 11, after being Killed Offscreen.
- Clueless Deputy: Lillis is slow-paced and unimaginative throughout the investigation and is well aware that Charlie only hired him as a deputy due to being friends with his uncle. He does get a little more serious once the murders start being discovered, helping chase down JD with dogs.
Dr. Ike Campbell
- Played By: Jay Brazeau
- The Coroner: Campbell examines the bodies of several murder victims and is quick to compare the situation to Wakefield's rampage seven years ago.
- What Happened to the Mouse?: Eventually he stops appearing and it's unclear if he is killed offscreen or simply holes up in his house until the feds arrive.
- Played By: Dean Wray
- Crazy Survivalist: He has various pit traps and snares around the island and keeps an attack dog by his side.
- Creepy Good: Harkin is introduced in a way suggesting that he could be a slasher villain, but he's merely been trying to track down Wakefield (or his copycat) since the first killing spree.
- Every Scar Has a Story: His face was badly burned during Wakefield's rampage and is pretty off-putting several years later.
- Intergenerational Friendship: Harkin fondly comments that J.D., who's a couple decades younger than he is, was one of the few people to visit him in the hospital, and the two are allies in investigating the murders.
- Unwitting Instigator of Doom: In the Back Story, when he was still a young deputy, Cole was sent to rough up John Wakefield and run him out of town for stalking Sheriff Mills' wife. Wakefield was sent to prison for seventeen years when he non-fatally stabbed Cole in the ensuing fight and came out ready for a Roaring Rampage of Revenge.
- Played By: Melanie Merkosky
- Ascended Extra: She appears in one scene of the series when Abby asks her about old newspaper clippings, but is the protagonist of the tie-in webisodes.
- Damsel out of Distress: In the final episode of Harper's Globe, Robin is hanged by Wakefield but manages to escape from the noose after he leaves, surviving the murder spree.
- Played By: Clint Carleton
- Cruel and Unusual Death: He's tied up under a boat (while wearing an oxygen mask) right next to the propeller, and is left to helplessly await his impending death for some time before being shredded to pieces when the engine starts.
- Invisible Parents: Ben's parents (Thomas's brother and sister-in-law) are neither seen nor mentioned.
- We Hardly Knew Ye: Ben is the series' first murder victim and is onscreen for less than a minute, stuck in a death trap and unable to talk. He also appears in the first Harper's Globe tie-in webisode, inviting Robin and her boyfriend to drink with him in a Seattle bar the night before his murder, but that appearance is also only a minute or so long.
- Played By: Andy Pearl
- Red Shirt: Garrett appears for several scenes in two episodes but has almost no dialogue or characterization, and his murder while guarding the jail is fairly abrupt.
- Played By: Maxine Miller
- Cool Old Lady: Julia is one of the oldest characters on the show and is a warm and pleasant organ player who's happy to help with the wedding rehearsal.
- Put on a Bus: She disappears from the show after witnessing Thomas get murdered.
- She's All Grown Up: Inverted. Henry is turned off rather than turned on to find out that he knew Stacy when she was ten and he was a teenager.
- Played By: Chilton Crane
- Tarot Troubles: Karena's tarot reading causes her to predict that Trish will be betrayed and that someone wants Abby dead. The intensity with which she makes those statements, even after the party, implies that she genuinely believes him, and both claims are accurate.
Brett and Lisa
- Played By: Simon Longmore and Debbie Podowski
- Relationship Revolving Door: Nikki says that they've been breaking up and getting back together for over a decade. When Brett finds a lost engagement ring on the beach, he finally uses it to propose.
- What Happened to the Mouse?: They're last seen getting into a fight after Chloe pretends to be Brett's mistress so Lisa will take off the engagement ring and she can snatch it back. It's never revealed if they realize they were duped and reconcile or what happens to them once the murders escalate.
Officers Darryl Riggens and Tyra Coulter
- Played By: Michael Rogers and Julia Anderson
- The Cavalry: They fly to the island to take custody of a murder suspect (not realizing he has already been exonerated and then murdered) and to evacuate the people who missed the last ferry. They are ambushed and gunned down within a minute of arriving.
- Old Cop, Young Cop: Officers Riggens and Coulter provide a rare male-female example. Riggens isn't old (being somewhere in his mid-thirties to early forties), but he's noticeably older than his rookie partner. Riggens has a casual, Seen It All attitude, while Coulter is bright, excitable, and eager about her impending first murder arrest.
John Wakefield: The Legend
- Ax-Crazy: Obviously.
- Big Bad Duumvirate: With his son Henry until the finale.
- Disc-One Final Boss: Gets killed by Henry in the finale.
- Domestic Abuse: Implied to have been the case with Sarah Mills, which was why she left him.
- Et Tu, Brute?: When Henry kills him.
- Freudian Excuse Is No Excuse: Yes, he was robbed of his son, and sent to prison for a long time after Charlie decided, Screw the Rules, I Make Them! and beefed up the charge sheet after Wakefied's fight with his deputies. but this is mitigated by implications of his Domestic Abuse, his status as The Corruptor, his clear enjoyment for what he's doing, and how, as Chloe points out in Splash he's killed countless people who had absolutely nothing to do with what happened, many of whom weren't even from the island.
- Implacable Man: In true slasher killer fashion.
- Never Found the Body: Sheriff Mills shot him and saw him fall off of a cliff, but never found the body and instead took the credit for killing him by putting another corpse in his coffin. Sure enough, he survived.
- Not Quite Dead: Turns out he survived his encounter with Sheriff Mills all those years ago and is one of the killers.
- Character Death: Although Henry ends up betraying him and stabbing him in the chest in the finale.
- Posthumous Character: Died years before the start of the show. Except he didn't.
- Serial Killer: He killed six people on the island prior to the start of the series, and kills many more in the actual show.
- Shrouded in Myth: He's a local legend due to his actions.
- Walking Spoiler: Knowing too much about him reveals that he's still alive.
- Weapon of Choice: Fishing-oriented weapons, most particularly a head spade and a boarding knife.