A Killer Concept From IMSCARED
I thought this would be an interesting way to bring a "killer" in from another game, a very popular indie horror game title called IMSCARED has these characters called White Face and HER, both of which seem to be the same character. This is the general focus of HER itself.
The Spirit
Killer Power: HER has a main killer power and a passive killer power, the main one being that she cannot lunge like a normal killer and instead must make used of the severed heads of possible victims that float aside her instead, using them like a ranged weapon and having them bite the survivor after charging. It would be similar to a huntress hatchet but possibly move slower, only going in a straight line from HER's perspective. They would bite the survivor and damage them, able to go over obstacles like Pallets and short walls. A survivor can even duck under them, if fast enough. The range of the heads are dependant on charge time and add-ons, making you able to do a quick short ranged attack or a long slow charge ranged attack. With M1 you can no longer lunge and at most can do a quick scratch attack, after hitting a survivor with the scratch you'll do an animation like all killers, but with her ranged attack you'll also be doing an animation with the head where it laughs and sputters after having bitten the survivor.
Second Part: HER also has a secondary passive killer power that will be a big part of her kit and mindgaming survivors, it gives her mobility unlike the huntress and makes her a menace to deal with if the survivors aren't paying attention. All generators on the map spawn with a single Monitor ontop of each one, all active and with a flashing screen of a video game upon it. HER can go up to any generator on the map and using the LEFT CONTROL button she has an animation of her climbing into the computer and disappearing entirely, removing all traces of her terror radius. Once she is in it, her first person perspective is now coming from the computer screen and she has the ability to aim at other generators and activate her power to instantly teleport to that generator and slowly climb out. At first her terror radius doesn't appear until she is halfway out of the computer monitor, but she will make a noise for those nearby to hear her climbing out, it could take around 3-5 seconds for her to fully get out and then this power it put on cooldown for a short or medium period depending on how strong it could be to do this.
Both her killer powers are affected by various add-ons she has and possibly other perks as well depending on circumstances.
Perks:
Unhindered: This killer is not easily hindered by obstacles that may come in their way, taking a hit might in fact come handy with this one. When you are struck you are given a small boost in speed that lasts 0.5/1/1.5 seconds and increases your speed by 45/65/75% for that duration. This perk has a cooldown of 60/50/40 seconds.
A Killers Lust: Your lust for the kill has made your victims quite weaker in their attempts to struggle. When a survivor is hooked by your hands the speed at which their struggle meter decreases is sped up by 20/25/30%.
Playtime: Time has come for you to show your true strength, you are a killer, you cannot be stopped by all means. Once the exit gates have been powered this perk will allow a killer to break pallets 100% faster for 20/25/30 seconds, during this time survivors will be alerted once the first pallet is broken via a unique visual similar to the EXPOSED effect.
As for her Mori, I feel like it would be befitting and necessary to add an actual jumpscare to Dead by Daylight, with the survivor being forced into first person and seeing HER disappear before them, making them think they are safe, albeit hesitantly moving forwards, just to have her reappear as close as possible to the survivors screen in a Jumpscare-style with a screech from HER before the survivor fades to black and all they're left with is HER giggling and floating above their corpse back in third person, having given them a heart attack.
It would be pretty cheesy and cheap but that's how Jumpscares are and I think in a horror game that represents a lot of the horror genre, it would be nice to have a really interesting Mori like that.
I also really hope BHVR considers bringing in a killer from another videogame someday, I just thought this one would be an interesting concept.