Grimm Overlord (Male Reader x Overlord)

First New Creation

Y/N and Salem were seen running around a large tank filled with a green liquid that had spider-like legs reaching out of it while laughing like mad scientists who had drunk 30 cups of coffee each while Ainz and their grandchildren watched worriedly from the sides. Sadly this was how they reacted to Nagini's idea of inventions and creations, going hyperactive and dining inhumane experiments...then again, they weren't even human and fed on negative emotions, so it was expected for them to torture those they disliked

"Is it ready?", "Of course it's ready Salem, we have been planning this for the last 23 hours 45 minutes, and 26 seconds" Y/N responded exasperatedly, "Just making sure, now go prepare to pull the lever!" Salem commanded her husband before tieing a muffled human to the... 'table', above the tank, all while the puny being tried to escape, this was one of the idiots who decided to threaten their daughters

"PLUNDGING SUBJECT 001 IN 3 2 1!" Y/N yelled before pulling the lever which created a whirling noise before dropping their first subject in. After 30 seconds Salem motioned for Y/N to bring their experiment up to which he complied by pulling a second lever, bringing the subject up

"*sigh* What a shame," Y/N said looking disappointedly at the freshly made skeleton "Do you think we should throw out the spider?", "*sigh* sure, HYDRON, TAKE THE SPIDER TO NAGINI, IT WILL FEED HER NEST AS A REWARD FOR THIS WONDERFUL IDEA", Hydron, who was too afraid at the moment to argue with his grandparents in fear of being their next experiment, quickly complied and rushed off with the spider's dead body

All of sudden Y/N, who had been in deep thought, snapped his fingers with a look of triumph on his face "Salem, help me summon about 100 Angels and demons each" he said excitedly to which Salem looked at him weirdly before complying and summoning half the requested summons while he summoned the rest "OK, now all demons and angels, get in the tank" he commanded gaining some looks of disbelief from the gods in the room

Y/N quickly whispered his plan into Salem's ear, after which she gained a disturbing smile. They both started dashing around grabbing what seemed like random things off the shelves, I mean, what would a bag of magic ice do? Anyway, Y/N started throwing everything into the pot at random intervals with Salem stirring the Grimm into a puddle of black sludge that was then mixed into the weird green liquid

After 10 minutes of this Y/N left the room only to return with what looked like 25 of beds with a lid on top, he then proceeded to slide each one into a rectangular square in the bottom of the tank, he made sure that they were locked in place before proceeding to throw a ball of energy into the mixture after which Salem followed his example

Before Y/N pulled yet ANOTHER lever Ainz asked a question that had been bothering all but the 2 occupants in the room "Uhh, guys. what are you doing all these experiments to summon new creatures when you could just summon them?", "Because, my dear skeletal friend, where is the fun in that? Also, we can only summon subjects that we have seen before, and considering we're creating new units, we can't just poof them into existence" Y/N explained before yanking the lever down in a way that reminded Ainz of some old American cartoons he had seen before

As the sludge slowly drained out of the tank Y/N and Salem watched with eager eyes while the other occupants slowly edged away from them. The room started to shake slightly while the beds started cracking apart. Dark green light started to shine out of the cracks, however the green started to slowly darken until it was so dark it was white only for half the beds to continue darkening till it was dull grey

When all of that was finished Y/N slowly approached the white light beds and Salem approached the grey ones but the second Y/N touched one of them all the beds on his side broke apart revealing 25 new type of angel Grimm

"Huh, would you look at that" Y/N said while the 25 new Mega tier Grimm Angels bowed before him, "WE LIVE TO SERVE" They said, proving that the power balls he and Salem had thrown in had indeed given them intelligence, "While I am ecstatic at your devotion, I believe it is time to meet your battle sisters" Y/N said before turning and seeing 25 Grimm Valkaries bowing before Salem before standing up and following her to stand before Y/N and his Angels

"Seem we have spawned 2 new unique races," Y/N said while thinking how this could help them in the long run until Salem interrupted his thought proses by suggesting her own idea, "They could be used as dragon riders so that even if they fall off they can use it as a surprise attack or infiltration", Y/N liked this idea and just nodded to her before turning to the 50 unique troops whos kind they would probably never be able to recreate "all of you go outside and get used to this new world, you will be using the buddy system, 1 angel paired with 1 Valkyrie. You must return within the next 10 days, if you see any conflicts, do, NOT, engage, you are the only of your kinds, so you are important pieces to our success

After all the angels and Valkyries had nodded and left Y/N and Salem looked at Ainz, and did a playful bow before him, "I trust you are pleased with the army we have produced for you so far Milord?" Y/N asked to which Ainz nodded regally, "Indeed my friend, at this point I am thinking of letting you both go and conquered other continents of this world, after all the fighting here is done, and we have to do the economic things, I will admit you are both better battle geniuses than I am, but I know how to run something smoothly so there would be no need to waste your talents lazing around"

"You please us with you words Guild Master, but let us not worry about that yet, you said you wanted to take this world properly, and that we shall do" Salem said receiving a nod from her husband and friend

"That. We. Shall" all three said at once