Are you talking about the ghouls of Locken or the undead from Chaos?
Probably the former, or maybe both, I don't remember anymore.
So, you're not interested in ordinary Cutthroats either. By the way, I came up with a description for the Cutthroats.
Okay, let's talk about Cutthroats. I look at them – well, it's a good unit, but I wouldn't have come up with or created something like that, because it's not my thing.
So, let's say Cutthroats didn't exist. I find a mention of them in some bestiary, and immediately there's a problem – I'm not interested in monster-corpse eaters. My corpse eater was originally supposed to jump; it was either a spirit of Irollan distorted by demonic corruption after the First Eclipse, or a demon trapped on Ashan and severed from Shio, but frankly, all of this is irrelevant; the visuals were what mattered.
Okay, let's say I wanted to create a Cutthroat. I paint a Minotaur, and what do I do with the head? I don't know how to make models, so the development would stop there forever, or I would glue together chitin from a Corus, pieces of animals, teeth, etc.
That's not my method; I rarely glue pieces together like that.
Usually, I just take something that's already made. I can again recall my corpse eater – I found a werewolf skull in Skyrim, but it was covered in drawings, so the whole unit with the wolf skull went into the drawer. Half a year later, I became interested in neural networks. Kandinsky allows you to erase parts of an image and generate something else there – I cleaned up the skull, hooray! I decided to attach it to a demon, but the demon has a wide neck, so it went into the drawer for 2 weeks. During this time, I started looking for another base for the unit and created the Tomb Lords. It's good that Pavlinho didn't help me; without him, I probably would have given the demon a mane or, more likely, a hairy neck. I was delaying this because of the horns; I would have had to bend them differently.
So, the whole development revolved around the model, not even the unit, but the thing that I attached to the unit.
Added 5 minutes ago
I remembered – the horns weren't there yet at the stage of "the unit has a thick neck"; these were later concerns.
Added 11 minutes ago
Ah, now I see what you meant by the description for the Cutthroat.
Added 8 minutes ago
In general, units with descriptions should be tied to some lore – local or global. For example, my dark dwarves have their own local lore, or maybe a connection to, say, the human empire. Here's an example: there's a cool warrior who hunts dragons; that's a simple base for a description. BUT the warrior is a human – so let it be a branch of the Order of Paladins, which is dedicated to strengthening the imperial religion by destroying the dragons of other gods – cool! You can design it to look like the empire, you can add that the order is officially recognized as heretical and the empire doesn't supply it – so let them have old armor, tattered cloaks, etc.
I usually create units without descriptions, unfortunately, this is not suitable for NCF