The mask's name is Mask of the Envious, also known as the Mask of Envy.
Ainz had once worn this mask as well, which caused a mass flood of spam on the online messaging boards. "Has the game company gone crazy?" "We were waiting for this." "One of our guild members does not have this mask, can someone PK him?" "I am no longer human ohohoh!" those kinds of messages appeared about the mask.
Next he took out a pair of metal gloves. The outer appearance was that of some crudely made iron gauntlets, nothing special. This item was called [Iron Gloves] and it was something the members of Ainz Ooal Gown made to change the appearance of their hands. The only ability it had was to improve strength.
Wearing these items, his whole skeletal appearance was fully covered up.
Ainz had his reasons why he covered up his appearance at this time around. That was because Ainz realised he made a fatal mistake.
In YGGDRASIL, Ainz was already so used to looking at his skeletal appearance that it was no longer frightening to him. However, for the people of this world, Ainz's appearance was the perfect embodiment of terror. Whether it was the two girls who almost got killed, or the fully armed knight, everyone was afraid of him.
In short, using items to change his appearance from Evil Monster into Evil Mage───should be enough. In the end he didn't know where to put the staff so he decided to just take it with him. It shouldn't be that much of a problem.
"It is too late to beg for mercy from your god now. If you want mercy, you shouldn't have killed these people."
Ainz threw out a line only atheists would say, made a praying sign with his hand and the dead bodies disappeared with a glowing light, before he activated his next spell.
"「Flight」."
Ainz slowly floated up into the air. Before long, Albedo could be seen floating beside him.
"— Death Knight, if any knights are still alive, do not kill them. They still have some value."
Listening to Ainz's orders, the Death Knight accepted his command. However, what the Death Knight was feeling when he responded to his new order was rather difficult to describe.
Aniz flew at high speeds towards the location where the horn had been blown. The winds blew against his body, never before did he fly this fast in YGGDRASIL. Although he felt uncomfortable with his long robe pressing against his body, he only had to endure it for a short time.
Soon he was floating in the air above the village and from there he overlooked the situation.
Ainz noticed how the square looked as if it was flooded with a dark, black liquid. There were several bodies sprawled on the ground next to the shaking bodies of some knights, and standing in front of them was the Death Knight.
Ainz counted the dying and glanced at the surviving knights who looked like they could barely move — a group of four. That was more than he needed, but it didn't really matter if there were more.
"Death Knight, that's enough."
The tone of this voice was slightly out of place, it was as casual as a boss telling a store clerk what he wanted to buy, and for Ainz this situation was exactly like casually walking into a store and buying something.
Accompanied by Albedo, Ainz slowly floated to the ground.
The collapsed knights were stunned by this arrival. They were obviously waiting for reinforcements, but the people who came were not the ones they wanted to see and their hope was completely shattered.
"This is our first meeting, honorable knights, I am called Ainz Ooal Gown."
No one responded.
"If you surrender now you may keep your lives. And maybe fight another day—"
One of the swords was immediately thrown down. Soon there were four swords, messily thrown onto the ground. During this time no one spoke a word.
"… You look tired. But considering you are standing in front of the Death Knight's master, your heads seem to be a bit too high."
The knights quickly knelt onto the floor, with their heads hanging down.
They didn't look like knights bowing before their king, instead they looked like prisoners waiting for their execution.
"……I will allow you to leave with your lives. But I would like for you to go to your masters and — convey a message."
Ainz used 「Flight」 to float close to where one knight was and used his staff to gently remove the knight's helmet. From behind his mask he looked into the weary eyes of the knight.
"Do not cause any trouble here. If you choose to not listen to my advice, next time you and your country will burn together."
The trembling knight constantly nodded, the image of him trying so hard looked fairly amusing.
"Now go. Remember to tell your masters."
With a movement of his chin, the knights fled.
"… What a tiring act."
Ainz softly complained while looking at the backs of the retreating knights.
If there were no villagers around, he would actually relax his shoulders. Although it was similar in the Great Tomb of Nazarick, putting on an act full of majesty like that was extremely stressful for a normal office worker like Ainz. But his act still wasn't over, he still had to put on another mask.
Ainz held back a sigh and walked towards the villagers, while Albedo followed him with her clanking armor.
───Tidy up the zombie slaves.
Ainz ordered the Death Knight in his mind while he approached the villagers and he became gradually able to see the mixture of confusion and anxiety on their faces.
It was not that they were dissatisfied about the knights being allowed to flee, it was just that the person in front of them was scarier than the knights.
Ainz finally realised the situation he was in — since he was strong, even stronger than those knights, he never considered the villager's point of view.
Ainz collected himself and thought for a moment.
Since it would be counterproductive if he got too close, Ainz stopped some distance away from them and addressed them with used a gentle tone:
"You are safe now, don't worry."
"You, you are…."
One of the villagers, who seemed to be their representative, spoke up but even at this time their eyes did not leave the Death Knight.
"I saw people attacking the village, so I came to help."
"Ohhh….."
With a startled noise, everyone started to look relieved. However, not all of the villagers gathered here were completely at ease.
There's no helping it. Maybe it would it be better if I changed my approach?
Ainz decided to use an approach he didn't like.
"… Having said that, my services are not for free. I would like to receive a reward for every surviving villager, you understand?"
The villagers looked at each other, seemingly uneasy about the money. But from Ainz's perspective, it seemed like the last skeptical looks of the villagers were slowly fading away. They were saved because of money and that thought reduced their doubts.
"But, but the state of the village───"