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The facts, as I understand them from my very basic research:

1) Dissociative Identity Disorder is caused by complex PTSD, usually from child abuse. You know how sometimes when people go through a traumatic event they just supress the memory so they won't have to deal with it, sometimes not remembering it at all? So when this happens to the same person a lot of times, from a very young age, sometimes entire sides of their personality are supressed along the way and develop completely seperate identities. That's the basic idea. If you wanna learn more, google it up.
There are other neurological or mental disorders that can cause someone to have multiple personalities, but they're much rarer.

2) There's nothing about DID that can make you more violent. Frankly, most dissociation disorders are more likely to make you passive and volunrable while others are violent to you.

3) Alter egos are defence mechanisms, sides of yourself that split apart to help you cope with something. There's no way to get rid of them - either you merge with them (which is very hard and often only temporary) or you learn to live with them.

4) Despite this, the vast majority of 'personality split' representation is villainous (I'm trying to think of non-villainous ones, and the only two examples that come to mind are A. a sitcom character who started as simply 'a guy who likes to play made-up characters in daily life' and turned into a DID system as the joke was taken further, and B. A Brandon Sanderson character, cause Sanderson is the best.), and two incredibly common tropes are the villain causing it themselves more or less intentionally via a bizzare scientific experiment, or a villainous alter ego 'taking over' a character out of nowhere.


My opinion:

While I understand the symbolism of the 'evil alter ego' as a manifestation of the dark impulses we as ordinary people possess and try to suppress, it's important to remember that we're talking about an actual disorder many people deal with.
People who, by default, had already suffered more than any living being should, even without having to see themselves as presented as villains over and over again.

I don't suffer from DID, but I do deal with a milder mental disorder that also gets misunderstood and misrepresented more often than not, and it took me a long time to even start suspecting it, cause literally every single word of the stereotype was wrong.
This is a real problem. This is stopping people from understanding themselves and getting the help they need.

I'm not asking you to always be politically correct with your art. Art isn't supposed to be didactive. Even blatantly offensive tropes have their use sometimes.

I'm just asking you:

When the majority of media and especially horror media chooses to demonize a certain condition for no reason other than copying from the same century-old novel or thinking it makes them look sophisticated, do you really want to join them?

If you want to really be original and mindblowing, do your research and create a positive, well-rounded NPC with reasonably scienficially-accurate DID.

(Same applies for a lot of other disabilities, BTW.)

Just wait until you delve into the world of real life psychopathy vs how it is depicted in media.

I hear you. I understand where you're coming from. I agree with the sentiment.

Here's the thing though:

Darklords are not just villains. They are tragic villains. All of them, to a one. There is something awful that happened to them in their past, and in reaction to that trauma, they lashed out disproportionately. They are all, to a one, suffering from a disorder of one kind or another. In the overwhelming majority of cases, these disorders result in people who are mostly normal and just have a quirk (though admittedly, sometimes those quirks need medical attention via medication or therapy).

But, in rare instances, there is a perfect storm of circumstance —trauma, the presence or development of a disorder, the disorder sent in a particular direction by the trauma, and then neither the trauma nor the disorder being recognized or dealt with— which results someone who establishes/fits the stereotype. And because they did something to draw public attention, the public associates the crime with the disorder.

The media doesn't report on the born psychopath who was a difficult child, but then went on to become a successful businessman, doctor, or local politician. Society doesn't focus on the schizophrenic who talks to himself while he volunteers as a soup kitchen to feed the poor.

Human brains are wired to weigh negative experiences more heavily that they do positive ones. It is an old mechanism, a feature of the species' survival instinct that was a broader application than you might expect.

This is why stereotypes of this nature are so hard to tear down. Because one bad experience is enough to taint all future interactions.

TL;DR

Psychological disorders are almost mandatory for a Darklord. But if you're going to outright give your Darklord one, I agree that you should do research and understand what that disorder entails.

Check Davion the Mad
https://fraternityofshadows.com/wiki/Davion_the_Mad

Just as vampire stories are not meant to be a commentary on real-world medical conditions like porphyria or rabies, very seldom does supernatural horror fiction use split personality tropes to comment on DID. More often, the condition is treated as, well, supernatural, and brought about by outside forces. Dr. Jekyll acquires it as a result of drinking pseudo-magical potion, Tristen Hiregaard is possessed by the lingering spirit of his evil father, etc.

Horror stories often tantalize us with imagery of creatures that contain contradictory ideas: a corpse that is also alive, a man who is also a beast, a thing of clay that walks. With horror stories about split personality, the contradictory idea is a 'me' who is also 'not me'. That is the itch being scratched within our imagination. It has nothing to do with how real split personalities actually are, and is probably more related to fears of sleepwalking, alien mind control, demonic possession, or similar.

Idea for a split dark lord, twins that now share a body. A hard life and abuse they become dependent on each other, it is a toxic relationship.
One is more outgoing and forceful but also cruel, the other is much more passive but less confrontational. It went badly when the passive one started disagreeing with his brother.

edised wrote: Mon Aug 31, 2026 2:30 pm One is more outgoing and forceful but also cruel, the other is much more passive but less confrontational.

Therese and Jeanette Voreman from the game Vampire: Bloodlines?

DustBunny wrote: Mon Aug 31, 2026 9:54 pm

edised wrote: Mon Aug 31, 2026 2:30 pm One is more outgoing and forceful but also cruel, the other is much more passive but less confrontational.

Therese and Jeanette Voreman from the game Vampire: Bloodlines?

'Vore-man'? Really? 0_õ That's a bit unfortunate, given the setting.

I remember Multiple Personality Disorder (MPD) from when I was a kid in the 1980s and 1990s. It was intertwined with the Satanic Panic. Quelle surprise, most of these cases turned out to be fraudulent. If you create a Malken like Darklord, there is zero chance that it resembles a real life mental illness, if that's what you are worried about.