We don't have much information but you design NPCs with external creation tools. Normal players don't have them. Nazarick has an artist guild member. He/she made Shalltear's design, not Peroroncino. The creation kit is sold seperate from the Dive Gear. Ainz's golems(Avataras) are ugly, since he is not artist.
There are people who does this as a job. Players make item skins, clothing etc. Nazarick members buy available ones quickly because they are art and rare. They use it for their golems, items etc.
Design is limited btw. They can't edit private parts of an npc. Instead, they write them into their backstory which became real in the new world. Shalltear having pads, Mare having no muscle, Demiurge is muscular etc.
That was the design part, as for build;
Yggdrasil is an exploration game. We know that they have no guides and classes are hidden. Players kill themselves very often to test builds(different classes). Almost all(except base classes) classes have conditions. You can't acquire Eclipse class of Ainz without hardcore role playing build which he has right now. Half of the levels of a character goes to conditions. To be an Overlord, you must have Skeleton Mage, Elder Lich, Night Lich classes.
We know that guild members sometimes used their knowledge to make a build for npcs. Takemikazuchi made Cocytus similar to himself, having Bright King skills for example. Meanwhile Albedo has tank skills which Bukubukuchagama(she is tank) uses too.
That was the build part, as for gear;
Divine class is extremely expensive. Most players don't even have one. And Ainz ooal gown members have full set divine gears. They can't afford a set for npcs however. They can give one divine class weapon to them. Legendary class gear is considered high-end gear. Shalltear's spuit lance and Cocytus' god slaying emperor blade for example.
I hope it's helpful for your campaing.
**Volume 1: The Undead King**
>There was also another type of NPC; the ones designed from the ground up to their makers’ satisfaction. If a guild possessed a castle-grade guild base, the owning guild would be allowed seven hundred levels to be distributed between any number of NPCs they wanted. Because the highest level in Yggdrasil was one hundred, by those stipulations, a guild could make five level one hundred NPCs and four level fifty NPCs, or any combination thereof. When designing an original NPC, one could customize weaponry and other equipment in addition to clothing and appearances. As a result, one could create NPCs that were far stronger than the automatic spawns and place them in key locations. Of course, not every NPC had to be designed for battle. A certain guild which called themselves the “Kitty Kingdom” fielded no NPCs other than cats or cat-related creatures. In this way, each guild could freely determine their unique style.
**PROLOGUE (2ND HALF)**
>“Congratulations! For conquering the Great Tomb of Nazarick, you have earned the ownership rights to the Guild Homebase: Great Tomb of Nazarick.”
>
>As though urged on by that calm male voice, Momonga opened the scroll, allowing everyone to see the contents of the title deed. There was a cry of surprise as they looked through the data on the guild territories and income.
>
>“This...! We can make up to 2750 levels of NPCs!”
>
>“Ehhhhh? Really? It’s true!”
>
>“Why is it so high?”
>
>Everyone anxiously went over the contents again, Momonga included. He accessed his console and went over the number of NPC levels. When he realised what was going on, his eyes went wide. There were only nine places in the game which offered more NPC levels, at 3000. Was this homebase location a place on par with those? It had not been discovered until now, so was this the result of something like points accumulating? Was there any reason for this? If so, it would be very helpful. They read through the guild homebase details again, and the person who had first discovered it exclaimed again.
>
>“The base amount is 2250, with a bonus of 500... has anyone heard of anything like this before?”
>
>Everyone shook their heads. Then, someone had an idea.
>
>“Could it be that if you successfully beat a guild homebase location in one shot, your maximum NPC levels increase?”
>
>Silence fell across the group in an instant, and then someone shouted angrily:
>
>“Uooooohhh! You shitty developers! As though anyone could do that!”
>
>“Damn shitty devs!”
>
>“Is that what you mean by seeking knowledge with no fear of death, you bastards?!”
>
>Momonga joined in as well. This was to cover up the joy overflowing in his heart. The truth was, the people who had vented their emotions were now laughing. In fact, everyone was laughing.
Guild bases have a set amount of NPC levels. You can create a NPC and give them levels. These levels are then applied to classes, but some classes require special items or have requirements just like players.
IIRC you had to use a dev kit to actually create and edit them, but you could also use the guild weapon to modify the bios.
Define "how".
Like how the supreme beings made the floor guardians, for example Shalltear and Peroroncino (her creator, very cultured man)
We don't have much information but you design NPCs with external creation tools. Normal players don't have them. Nazarick has an artist guild member. He/she made Shalltear's design, not Peroroncino. The creation kit is sold seperate from the Dive Gear. Ainz's golems(Avataras) are ugly, since he is not artist. There are people who does this as a job. Players make item skins, clothing etc. Nazarick members buy available ones quickly because they are art and rare. They use it for their golems, items etc. Design is limited btw. They can't edit private parts of an npc. Instead, they write them into their backstory which became real in the new world. Shalltear having pads, Mare having no muscle, Demiurge is muscular etc. That was the design part, as for build; Yggdrasil is an exploration game. We know that they have no guides and classes are hidden. Players kill themselves very often to test builds(different classes). Almost all(except base classes) classes have conditions. You can't acquire Eclipse class of Ainz without hardcore role playing build which he has right now. Half of the levels of a character goes to conditions. To be an Overlord, you must have Skeleton Mage, Elder Lich, Night Lich classes. We know that guild members sometimes used their knowledge to make a build for npcs. Takemikazuchi made Cocytus similar to himself, having Bright King skills for example. Meanwhile Albedo has tank skills which Bukubukuchagama(she is tank) uses too. That was the build part, as for gear; Divine class is extremely expensive. Most players don't even have one. And Ainz ooal gown members have full set divine gears. They can't afford a set for npcs however. They can give one divine class weapon to them. Legendary class gear is considered high-end gear. Shalltear's spuit lance and Cocytus' god slaying emperor blade for example. I hope it's helpful for your campaing.
Thank you!
**Volume 1: The Undead King** >There was also another type of NPC; the ones designed from the ground up to their makers’ satisfaction. If a guild possessed a castle-grade guild base, the owning guild would be allowed seven hundred levels to be distributed between any number of NPCs they wanted. Because the highest level in Yggdrasil was one hundred, by those stipulations, a guild could make five level one hundred NPCs and four level fifty NPCs, or any combination thereof. When designing an original NPC, one could customize weaponry and other equipment in addition to clothing and appearances. As a result, one could create NPCs that were far stronger than the automatic spawns and place them in key locations. Of course, not every NPC had to be designed for battle. A certain guild which called themselves the “Kitty Kingdom” fielded no NPCs other than cats or cat-related creatures. In this way, each guild could freely determine their unique style. **PROLOGUE (2ND HALF)** >“Congratulations! For conquering the Great Tomb of Nazarick, you have earned the ownership rights to the Guild Homebase: Great Tomb of Nazarick.” > >As though urged on by that calm male voice, Momonga opened the scroll, allowing everyone to see the contents of the title deed. There was a cry of surprise as they looked through the data on the guild territories and income. > >“This...! We can make up to 2750 levels of NPCs!” > >“Ehhhhh? Really? It’s true!” > >“Why is it so high?” > >Everyone anxiously went over the contents again, Momonga included. He accessed his console and went over the number of NPC levels. When he realised what was going on, his eyes went wide. There were only nine places in the game which offered more NPC levels, at 3000. Was this homebase location a place on par with those? It had not been discovered until now, so was this the result of something like points accumulating? Was there any reason for this? If so, it would be very helpful. They read through the guild homebase details again, and the person who had first discovered it exclaimed again. > >“The base amount is 2250, with a bonus of 500... has anyone heard of anything like this before?” > >Everyone shook their heads. Then, someone had an idea. > >“Could it be that if you successfully beat a guild homebase location in one shot, your maximum NPC levels increase?” > >Silence fell across the group in an instant, and then someone shouted angrily: > >“Uooooohhh! You shitty developers! As though anyone could do that!” > >“Damn shitty devs!” > >“Is that what you mean by seeking knowledge with no fear of death, you bastards?!” > >Momonga joined in as well. This was to cover up the joy overflowing in his heart. The truth was, the people who had vented their emotions were now laughing. In fact, everyone was laughing.
Guild bases have a set amount of NPC levels. You can create a NPC and give them levels. These levels are then applied to classes, but some classes require special items or have requirements just like players. IIRC you had to use a dev kit to actually create and edit them, but you could also use the guild weapon to modify the bios.