List of (Reasonable) Potential Killers
Hannibal Lecter
The Creeper ( Jeepers Creepers)
Norman Bates
Candyman
Pinhead
Chatterer
Pyramid Head
Annie Wilkes ( Misery) - Haha... No, seriously, this chic freaked me out.
Iris - 30 days of night
Old Woman - The Devil
Pumpkinhead
Jason
Pale Man / Fauna
Kurt Barlow/Vampires
Otis B Driftwood
Hal 9000 ( Computer controlled killer)
The Thing
Regan McNeil/Possessed character
Chuckie
Ghostface
The Craft/ Witches or Wiccan powered
Margerite White - Carrie
Honorable mention for survivors. Ash from Army of Darkness please 
Link to Wikipedia with other not-as-popular selections
Comments
Pinhead would be really great... summon objects to block survivors or trip them up, and have hooks come out of the ground and split them apart as a mori.
Hannibal is another one I'd really like to see. The mori would be making the survivors eat their brains, bajahahah
Forgot about Krampus or Jack the Ripper.
The leprechaun.
The monsters from The Feast. Would have a pretty killer level, too.
The Angry Princess
Old Gregg! Would have a pretty killer level, and could be the first killer/survivor terror because he has one of the most killer feared pieces of equipment as his natural anatomy.
can't do jeepers creepers cause the creator is a criminal or something like that.
My vote would go to Candyman.
I still want Godzilla or King Kong.
i had most of them on my list a week or so back, some even got surivors
Pumpkinhead - Survivor: Ed Harley
would be awesome
Pinhead
Ghostface - Survivor: Sidney Prescott
Chucky
Pennywise
Hannibal Lecter - Survivor: Clarice Starling
Jason Vorhees - Survivor: Tommy Jarvis. Mori: put victim in a sleeping bad and swing him/her in wall's, Three's and the ground.
Creepers Jeepers -
Candyman
Radford (Midnight Movie) - Survivor: Timmy
Fauno / Pale Man (Pan¨s Labyrinth)
Samara Morgan (The Ring)
Pyramid Head (Silent Hill)
Chatterer (Hellraiser)
Iris (30 days of nights)
Mr Boogie
I personally want to see Chuckie most. I think he could work in doll form in the game and it would be a lot of fun for both sides.
The Boogieman
Pretty much what isn't in the game already. An alien killer, an undead killer, a vampire killer, a mythical killer and a fairy tale killer.
The crooked Man
I'd love to see Pinhead come to Dead by Daylight.
I see some of these points. I think out of all of the ones listed.. The creeper would fit the best.
Ryuk (Death Note)
Hell. Lets just make a power ranger killer. Ill dc to that shiz all day long lol
Hannibal Lecter would be great, but my vote goes for the Mads Mikkelsen version: a gentleman in a fancy suit running after you with a kitchen knife.
...and a cool alternate costume would be the wendigo (the dark horned man who sees Will Graham in his visions).
Both of them are better for me than the Anthony Hopkins version: a respectable man dressed like a prisoner with an anti-bite half-mask.
But once you know which killer it is those cabinets would become pointless no?
-Patrick Bateman (American Psycho)
-Tribe Leader (The Green Inferno)
-Dr. Satan or Earl (House of 1000 Corpses)
-Otis B. Driftwood (HO1C/Devil's Rejects)
-Victor Crowley (Hatchet)
-Bughuul (Sinister)
-Any one of the Cult from Hot Fuzz
I still think that The Tank from the Left 4 Dead series could be made possible.
Now i know the devs don't want regular zombies in their game, but not a single person in L4D is actually a zombie.
Instead, they're all infected.
Yup, there's a difference.
I figure that The Tank would be able to break thrown-down pallets with a melee attack rather than the regular "Break pallet" interaction, allowing him to move on faster.
His Power, unsurprisingly, would be to grab a big rock from the ground...
(It doesn't have to look pretty, cause trust me, on maps like The Game & Lery's, it's not gonna.)
...and throw it at Survivors.
It would deal double damage, but it renders the Tank immobile during the grabbing and throwing animations.
Of course, you'd be able to move again after the animation is over, even if the rock hasn't hit anything yet.
How about Vincent Sinclair?
Pinhead (Hellraiser) - The Demon
W.Curved Blade
A. 'The Box' You torment the survivors and enjoy watching them suffer. The ability to leave puzzle boxes on generators, hooks, chests and totems. If a survivor fails a skill check on a puzzle box, they are injured as a result.
M.Strung up (Torn apart my hooked chains).
L.Cenobite Realm
1.'Blood Lust'. Freshly hit survivors leave moderately brighter red scratch mark if they run after being hit. Effect lasts 3 seconds.
2.'Suffering'. You revel in pain endured by your victims. Close injured survivors auras are revealed to you for 3 seconds with a 8 second cool down for the same survivor. Healing skill check fails result in associated suvivors' auras being revealed for 3 seconds.
3.'Torture'. You appreciate the pain that the hooks can inflict. Survivors who attempt to sabotage the hooks have their auras revealed for 5 seconds.
Candyman - The Myth
W.Hook
A.'Spectre'. Your supernatural powers allow you to appear next to a survivor who has been caught by your chilling gaze. Teleport to the opposite side of a survivor after releasing the Haunt charge. Ability has a 30 second cool down.
M.Gutted (Hook through back to stomach).
L.Burning Field Of Bees
1.'Be My Victim'. You become obsessed with one survivor. Sacrificing your obsession will cause all remaining survivors to have their auras revealed for 10 seconds.
2.'Feared Fable'. Your infamous folklore terrifies all that know your name. Unsuccessful skill checks on generators result in all connected survivors auras being revealed for 3 seconds.
3.'Swarm Of Pain'. Totem Perk: One chest is filled with vicious bees. Once opened, the victim is stung resulting in mobility and fixing penalties for 60 seconds. If the Totem is cleansed before the chest is opened, the original contents are restored.
Ghostface (Scream) - The Slasher
W.Kitchen Knife
A.'Stealth Dash'. Run at high speed in total silence. No Charge. Lasts for three seconds with a 10 second cool down.
M.Slasher Attack (Multiple Stab Wounds).
L.High School
1.'Terrified Of The End'. Injured survivors are terrified of you. Their moans of pain are moderately increased.
2.'Scary Movie' Every time a survivor is killed the remaining survivors become unnerved and receive a moderate 45 second skill challenge increase penalty.
3.'Killer Instinct'. Freshly hit survivors auras are revealed to you for 3 seconds.
Alien - The Alien
W.Claw
A.'Facehugger Egg'. Place an egg which when disturbed unleashes a Facehugger that attempts to attach to the survivor. The victim's aura is revealed for 3 seconds.
M.Kiss Of Death (Tongue Head Smash).
L.Mining Colony Planet
1.'Burns Unit'. Every time you get hit by a falling pallet, it becomes stained by your acid blood. Whenever a survivor vaults the pallet they get temporary speed and ability penalties.
2.'Valuable Cargo'. Your obsession has been unknowingly impregnated with an Alien. Don't hook your obsession. If your obsession is the last remaining survivor, they can then be grounded and a chest burster is born.
3.'Window Licker'. Drool drips from your mouth as you pass through windows, leaving acidic effects for 8 seconds. The next survivor who vaults the window will scream, revealing their aura for 3 seconds.
Matt Cordell (Maniac Cop) - The Cop
W.Bladed nightstick
A.'Remain Silent'. Move silently. Stops when weapon is drawn.
M.Beaten To Death (Nightstick Beatdown).
L.Police Headquarters.
P1.'Police Brutality'. Your powerful strikes cause massive damage to survivors. Hit a survivor for a third time and they receive moderate self-healing penalties.
P2.'Hard Justice'. A sense of urgency is needed as crime rises. Every time a generator is repaired your speed significantly increases for 12 seconds.
P3.'Death Penalty'. Option to kill your obsession after they have escaped a hook twice.
YES omg I would love playing as him or against him
I agree with tall man
That's Micheal Myers. In the movies he's referred to as the boogieman.
And his in-game name was going to be The Boogieman before being changed to The Shape
He's not even remotely close to what I think most people including myself typically think of when we say Boogieman.
I'm still too freaked out to watch another phantasm movie.
Idk just my first thought
Nice list of characters, to be honest when didn't get a left 4 dead killer with survivor was kinda sad. Now don't want them to be horror asymetrical that gets videogame horror icons. Rather have another add it into there universe like last year the nightmare. As for ash evil ash could make a good killer or one from the series cause they kinda would fit well. Hal 9000 be like a killer hard to add with weaponry plus he is taken out by stairs xD There is a couple maps that would defeat him among with any basement. But either than that think all possible and hope my favourite candyman is brought in before the jordan peele movie.
Maybe The Nun?