Now, this one came about a little strangely. You see, some time ago, I posted a challenge, 'Zero of Ainz Ooal Gown' (long before I ever watched Code Geass: Lelouch of the Rebellion), that crossed over Overlord with Code Geass, in a manner similar to my Potterverse/Overlord story Yield to the Darkness. Those of you following my newest stories will know that I have recently posted a Potterverse/Code Geass crossover called Warlock. There, in one of the earlier chapters, I discussed some stories I could do at a later date, most of them Potterverse crossovers, but I also brought up 'Zero of Ainz Ooal Gown'. A guest reviewer pointed out some reasons why they thought it wouldn't work (and very politely and constructively, I thought), and while I disagreed, it got me to thinking, how could I do it in a way that might work?

This, then, is the answer. Unlike 'Zero of Ainz Ooal Gown', this is a reincarnation fic, one where Momonga and the Tomb of Nazarick never made it to the New World, instead, somehow ending up in the Code Geass universe, with Momonga and most of the NPCs being reincarnated as Code Geass characters. Oh, and did I mention that they have kept both their levels AND their skills? Of course, they only get those unlocked when CC gives Lelouch/Momonga his Geass...though they have felt vestiges of that already.

Whether this becomes a full story or not depend on my motivation, as always, but it's a nice experiment that, hopefully, might become something more. The only other crossover of its kind is not even 5K words. Also, this will be a little cracky. You have been warned...

PLENIPOTENT PLAYER PRINCE

CHAPTER 1:

THE DAY AN OVERLORD WAS (RE)BORN

If CC was able to move her lungs in any way, she would have sighed in irritation. That made the 87th time she had been shot in the head…since she kept mental tallies, anyway(1). Dying was an inconvenience, though she could hardly call it pleasant or even enjoyable. Oh, save for that one time she outdid Charles and Marianne in a drinking competition and her liver gave out while they were singing drunkenly and trying to shave that blonde little shit VV's head.

Well, not that Charles and Marianne were much in the way of happy memories, not anymore. CC knew that Charles had had a hand in her imprisonment, even if it was Clovis who subjected her to all those inhumane experiments. No doubt keeping her on ice until they were ready to go through with that plan of theirs. And then, these terrorists or rebels or whatever they should be called decided to steal her.

And then, things went wrong. Shortly after the capsule confining her was opened up, she found herself watching as their son Lelouch, supposedly dead (but CC had known better for some time) was being wrestled to the ground by what looked like Suzaku Kururugi, the latter forcing a gas mask over the former's face in what was either a stupid act of self-sacrifice, or something bizarrely kinky. Her money was on the former.

Then, Clovis' goons had to show up. Suzaku protested the killings, and got shot for his troubles. A terrorist driving the truck set off some explosives, and CC had been dragged through the various derelict buildings of what seemed to be the Shinjuku ghetto. Clovis was embarking on a mass extermination, and was doubtless going to try and find her later.

Lelouch wasn't half bad at hiding. While he was good at chess, he was better at a surprising number of video games, though he seemed to be drawn to RPGs, from what she remembered before she buggered off from the Britannian court. But he seemed to do well with stealth as well. At least until his mobile phone trilled at exactly the wrong moment.

He was going to be shot, and CC threw herself in front of the bullet. Even though she knew exactly how unpleasant it was to have a small but fast piece of metal pierce one's skull and splatter parts of her brain matter all over the place. Not that would mean much unless she managed to will her currently regenerating body to make physical contact with him to get him to make a contract with her.

As she gathered the willpower needed to force her body to make contact, she reflected on Lelouch. He seemed odd when she saw him during his earlier years. Even with his regal nature, granted by his birth, there were odd moments when he seemed uncertain. Prone to odd melancholies, or bitterness, or even just an occasional awed looking at the sky or at the gardens.

And then, there was his sister, the one person he indisputably loved. Strangely obsessed with insects, cute, and yet, there was something dangerous lurking beneath the façade of Nunnally vi Britannia, even if CC couldn't put her finger on it. A potential weakness, but God help anyone who tried to exploit that.

And there was their friend, Suzaku Kururugi, an earnest young man who seemed to want to wield multiple swords at once. If there was someone who embodied the ideal of an honourable warrior, it was Suzaku. Not anything as pedestrian as the chivalric codes of European knighthood, or the bushido of the samurai, but something more personal.

CC had found that just a touch puzzling. Those three had seemed like older souls than they should have been. Still, it was a moot point. Her path had intersected with Lelouch's once more. And now, she was hoping, beyond hope, that he would be able to eventually take her Code and allow her to die. Or at least entertain her with his attempts to overthrow his father. It couldn't make Britannia any worse, and maybe he could stop the plan CC had once agreed to.

At the right moment, she reached out, grasped his hand, and took him into a mental world, a noosphere linked up to the great Noosphere that was the World of C. Into his mind, she spoke. You don't want to die here, do you?

What? Lelouch yelped, but she realised he seemed to have two voices, two images flickering over him…no, three. There was Lelouch Lamperouge, the skinny, scrawny Britannian prince in exile, his voice higher pitched and strident. There was what appeared to be a rather similarly scrawny Japanese man, handsome, but worn down by drudgery, his voice a little lower pitched. And then, behind them, with a voice like an echoing sepulchre…

Death.

No, not quite Death. It was a tall, robed skeleton, wielding an elaborate staff with seven jewels in the mouths of seven snakes at its apex, but it was not the Reaper, not with such a dumbfounded expression of surprise on its skull face mirrored on the faces of the other two images. She would have thought the Reaper eager to harvest her soul after so long a delay.

No. These overlapping images were the same person, she realised. Names entered her mind through their link. Satoru Suzuki, downtrodden corporate drone from a polluted future on another world. And Momonga, the Supreme Overlord, Ruler of Death, the mask Suzuki donned when he escaped to the fantasy world of Yggdrasil, the MMORPG opiate of that polluted future.

Memories of another life, of the frustrations and broken dreams of Satoru Suzuki, of his stewardship of Ainz Ooal Gown, entered her mind. Of the last day of Yggdrasil, of Suzuki staying logged on, bitter that his friends all but abandoned Ainz Ooal Gown, staying logged on until the shutdown…and then…Suzuki and Momonga died, only to be reborn as Lelouch vi Britannia.

There's power in here, CC mused to herself. Somehow, he has all the powers of that avatar of his, albeit locked away. Maybe if I give him the power of the Geass, it may be unlocked. But…that guild, they roleplayed as evil monsters. If I allow him such power, beyond even that of Geass…what will he do to the world?

It felt like an eternity, but in this memetic plain, an eternity was but a split second, especially for CC. Part of her was worried about the consequences of this…but part of her knew that, if she decided to have Charles and Marianne's plan stopped, then giving Lelouch this power would help.

Besides, there was a part of her that wanted to light the fuse and run like hell to a safe distance. Assuming there was one.

Getting back to the matter at hand, she said, You appear to have a reason for living. If I grant you power, would that be enough for you to fight on? In exchange for power, you will grant me my heart's desire. The Power of the King…no, the Overlord will isolate you, set you above and apart from normal people. Are you prepared for this?

She knew he would accept quickly, and thus, he did. But she wasn't prepared for the fireworks that followed when she gave him the power of Geass. She felt something blast out from Lelouch/Satoru Suzuki/Momonga, causing major ripples through the World of C. She could hear the cry of a billion, billion voices within that Noosphere…

…and they were all saying, Oh, shit(2)…

In the ghettos of Shinjuku, a pair of duelling Knightmare Frames, one a battered, refurbished Glasgow, the other a top of the range Sutherland, suddenly halted and paused mid-battle. Within them, the pilots froze as memories and abilities from another time flooded in. The teal-haired man in the Sutherland blinked, a strange thought flitting through his mind that he was missing a butler's outfit, while in the Glasgow, a red-haired girl with a belligerent demeanour suddenly shrieked, "Lord Momonga! My love, where are you?!"

In another Sutherland, a dark-skinned woman with silvery blue hair blinked. "Huh? Where's my crozier, su?"

In the Student Council, the gathered members collapsed, only to get back up. Milly looked down at her body, and wondered idly why she didn't need padding anymore, or why her skin wasn't so pale. Rivalz wondered why he was male, while Nina wondered why she was female…and when they saw their now heterochromic eyes in the mirror, they'd be even more confused. And Shirley found herself wondering whether she could get a maid outfit and something to eat…well, someone…

In the rooms of Lelouch Lamperouge, Nunnally opened her eyes for the first time in years. Insects gathered around her. "Oh! I'm cute! And I don't even need a mask!" she chirped as she looked in a polished silver plate.

Sayoko blinked, before peering at her now elongated fingers, electricity crackling around them…

As he was carried away on a stretcher, Suzaku dreamed of a cold lake that was home, and of having four arms to fight with…

Lloyd Asplund found his head filled with wonderful tortures he could inflict, in the name of science, while Cecile Croomy found herself forced to catch her own head when it fell off her shoulders…

Inside the Camelot trailer, the Lancelot dreamed dreams of adorable animals, squeeing in an adorable monotone…

In the ruined ghetto of Shinjuku, Tamaki frowned, suddenly having ambitions to take over the Great Tomb of Nazarick…

In an opulent and ornate chamber deep underground Shinjuku, a blank face, with only a triptych of holes for eyes and a mouth, seemed to nonetheless hold surprise and anticipation. "Mein Gott has come back!" he shrieked in a German accent. "Hurry back, Lord Momonga! SCHNELL!"

Lelouch vi Britannia nearly drowned in the flood of memories. For a time, he was torn between two lives, three personas. But while Satoru Suzuki had been a downtrodden salaryman in the 22nd Century, this new life had honed him into something more.

Lelouch had thought those dreams to be nightmares of a world turned into poisoned greyness, consumed by an evil even more insidious than Britannia, one where the masses were pacified by Dive-MMORPGs. But now, he knew with conviction that they had been memories, fragments from a past life.

He stood, and glared at the man who had murdered his friend Suzaku, had killed this mysterious green-haired woman, and who was intending to kill him. Some part of him activated Aura of Despair I. As the gathered men before him stared at him in horror, unable to understand the feeling of dread they felt emanating from the boy they were confronting (more than a few pissing themselves, judging by the darkening patches on their trousers), Lelouch said, coldly, "Tell me…how should a Britannian who despises his own country conduct himself?"

"…Are-are-are you s-s-s-some k-k-kind of radical?" the leader stammered out. He looked like he was on the verge of a heart attack.

"What's the matter?" Lelouch demanded. "I'm just a schoolboy, right? Or is it because you now understand that those who kill must be prepared to be killed in their turn? You wanted a massacre? You'll get one(3)." A power seemed to well up within his left eye, and he yelled, "I, Lelouch vi Britannia, order you to stand still, and accept your fate!"

"Yes, Your Highness!" the captain said, he and his men standing to attention. Faint red glows appeared in their eyes.

Lelouch turned to one, and reached out, activating a skill by instinct. "Grasp Heart," he intoned, feeling a pulsing organ within his hand…and crushed it. That soldier collapsed with a gurgle, blood spurting from his mouth.

Hmm, Ninth Tier Magic does seem a bit of overkill, he mused. He pointed to another, and used Dragon Lightning on another, turning him instantly into a crisp. A weak Fifth-Tier spell like that, and it killed him so readily?

Tiring of this game, he commanded, "All of you, DIE!"

"At once!" the captain barked, before taking his sidearm, and pressing it to his head, before shooting. The others followed suit.

Part of him recoiled with horror, but the other part smirked inwardly. Lelouch vi Britannia had been looking for a way to destroy the Britannia of his father, Emperor Charles zi Britannia. Satoru Suzuki had been a powerless drone. But Momonga had, somehow, supplied this amalgamation with power…with another part supplied by that green-haired girl.

Yes… Lelouch though with a grin. With this power, I can take on Britannia, and win…

CHAPTER 1 ANNOTATIONS:

So, Lelouch is actually a reincarnated Satoru Suzuki, aka Momonga, aka Ainz Ooal Gown. And it seems that he's not the only one reincarnated…and CC may have doomed the world. Well, as long as she can eat pizza while watching the world burn, I think she wouldn't mind so much.

Now, there's a few things to keep in mind. Firstly, Momonga was 'killed' when the Yggdrasil shutdown occurred, and his soul, along with that of the NPCs (for the most part) ended up reincarnated in the Code Geass-verse. However, the Tomb of Nazarick did get physically transported to the Code Geass-verse.

Secondly, this version of Lelouch is not as smart as the one in the original Code Geass. He will be closer to Momonga in some regards, though Momonga himself is still pretty smart. However, this version of Lelouch/Momonga is actually more moral, and, due to the various NPCs having lived human lives (for the most part: yes, Shizu Delta IS the Lancelot), they will be…I hesitate to say less evil, but they at least have enough perspective to understand the need for caution, even the ones who are very evil. Albedo and Shalltear are still obsessed with banging Momonga, true (and given that Momonga actually has a flesh and blood body, not to mention a penis, they have a better chance of succeeding), and Albedo will still think of humans as insects, but both will have humans that they have soft spots for.

Thirdly, they will eventually gain the ability to change back and forth between their current forms, and those as their forms in Ygdrassil.

Now, Overlord characters are OP as fuck, as anyone familiar with the series or the light novels should know. Much of the story will be about how they cope with their new situation, as well as strategizing.

1. I was sort of inspired by Frieza's character in Dragonball Z Abridged (yes, I know they say it's spelled Freeza in the Abridged Series, but I'm so used to the dub spelling, so any weeaboos who take issue: bite me) when he claims that he has heard heroic speeches so often, he makes a mental tally of certain lines. Given CC's immortality, I reckon she does the same thing for how many times she's died a certain way.

2. This is a reference to a similar joke in 8-Bit Theater (which, of course, made the joke as a reference to the first Star Wars film).

3. I took these lines from the dub of Overlord, which I think, in some regards of dialogue, is an improvement over the original Japanese.