Marinette Al Ghul was very, very angry.

Half the League had staged a coup, killing many of the members still loyal to the Demon's Head. Her mother, Talia, was in a watchtower, rapidly shooting down the helicopters assaulting the compound.

And Ra's Al Ghul, the Demon's Head, lay on the floor in front of her, his body horrifically burnt. He was alive, but just. The work of Slade, his trusted right hand man.

Marinette hurries to Ra's' side as her twin draws his sword and attacks the traitor, anger fueling every one of Damian's attacks.

"I am sorry that I was never good enough, Ra's, but I am not sorry that you will be dead soon." She murmurs. Marinette stands up, the rage of the Pit burning inside her. These people want to kill her. Kill her brother. She refuses to let that happen.

She flips open her two steel fans and bares her teeth in a snarl as Slade swings at Damian, who blocks the blow, but the force of it sends him crashing into the building.

Marinette charges the man, fans glinting dangerously in the light. She dodges the first swing and delivers a swift kick to Slade's stomach, one fan slicing a cut across his right cheek. The second blow is intercepted by her fans. She is pushed back, her slim eleven year old body no match for a full-grown, very well-trained assassin.

Damian joins her and the onslaught of attacks from both of them sends Slade flying across the courtyard.

"So you're Talia's little bastards." He sneers. "Not bad for children, but no match for me."

"We shall see about that." Marinette hisses. The Pit rage inside her grows even larger, and she lets the madness control her movements. The steel fans whirl through the air as she flicks her wrists, spinning and kicking, pushing the man back under a balcony.

Damian understands her motive and slices through the support beams with his katana, sending a large amount of wood crashing down on Slade. When the traitor bursts upwards, Marinette feels satisfaction as Damian thrusts his blade into Slade's right eye.

"And now, your heart." He snarls. Slade parries Damian's blow and intercepts Marinette's swing with his armor, eliciting sparks.

Three spheres roll to a stop at Marinette's feet. They spew out black smoke, and the twins reflexively cover their noses with their sleeves as Slade makes his escape.

"I'll make you two suffer for this. Next time." Slade's voice rings all around them as they search blindly through the haze.

The smoke clears in time for them to see Slade being lifted out of the compound by a helicopter, with a man they recognize crouching in it, smirking.

"Ubu." Damian growls. Marinette puts a hand on his shoulder.

"Do not worry, akhi. We will make him pay." The helicopter sails away and they follow it out of the building.

Her brother raises his sword. "Come back and finish it, cowards!"

The remaining traitors also throw smoke bombs as they are picked up by the helicopters, leaving the twins in front of a burning building, surrounded by smoke, corpses, and blood.

"Grandfather." Damian remembers, running back into the burning building. Marinette follows, not about to let her brother go alone anywhere. Not after what just happened.

"Damian!" She hears Talia call. "Marinette! Wait!"

She ignores her mother and charges down the stairs that lead to the Lazarus Pit, then freezes at the bottom. Damian releases a shaky breath by her side as Talia stops behind them.

Ra's' burnt corpse lay in front of them, outstretched hand just mere centimeters away from the green water.

Damian walks towards the body, sword falling to the ground.

"Damian." Talia says. Her brother tries to pick up the corpse, heaving with the strain.

"We have to get him into the Lazarus Pit." He says desperately. Damian picks up the body, but Marinette runs in front of him, blocking his path, stuffing down the tiny spark of elation at seeing her oldest, and largest tormentor dead.

"Akhi, you know the Pit cannot heal bodies this damaged. Ra's is gone for good." Damian sets the corpse back down and bows his head, tears glimmering in his eyes but refusing to fall.

Talia puts a hand on each of their shoulders. "You did your best."

"I failed." Her brother says. Marinette lets her hand rest on top of his, offering him silent comfort. We both did.

"We can't think about that now. We must move." Talia says. "Damian. Marinette. Come."

Marinette stands obediently, but Damian stays a moment longer. "Damian. Now!"

Marinette gently grasps her brother's wrist and pulls him to his feet, following her mother out of the room.

"...Where are we going?" Damian asks.

"Gotham City." Talia replies. "It's time you meet your father."

.o0o.

The ride to Gotham City is tense. Damian repeatedly polishes his katana, while Marinette continuously opens and closes her fans.

Their father is Bruce Wayne. World's richest man, known for his work in many charities and for his 'playboy' reputation. At night, known as Gotham's Dark Knight. In other words, their father is Batman.

Talia leaves them on the boat, choosing to track down their father and bring him back herself.

Marinette turns to Damian once she's sure her mother is gone. "I would like to spar you, akhi. It would be a good outlet for both our feelings right now."

Damian scans at the space around them. "As much as I want to agree, this space isn't nearly large enough for a productive spar."

Marinette huffs. "You are right. I shall meditate instead. The Pit rage has not completely receded yet from the fight."

"Remind me why Mother wants us to stay behind this curtain again?"

"Officially, it is because she wants to keep us hidden until she is sure he will accept us. Unofficially, I think it is because she would like to seduce him first." Marinette replies.

Their mother comes back not long after, with the footsteps of a tall man trying to be as silent as possible. Batman.

"Would you like a drink?" Talia asks.

"Last time that didn't go so well." A deep voice responds.

"Oh, you're right. If I remember correctly, I put a little something in your beverage."

"Same way I remember it."

Damian and Marinette exchange a look. So this is how they were born.

"It made you romantic."

"It made me do what you wanted."

"Was it all bad, Beloved?"

A pause. "...No. It wasn't."

Marinette tunes out after that until Talia says "And now this man wants to kill us." Her heels click closer to the curtain.

"Us?" Batman asks.

"Not you." Talia replies. "Me." She draws back the curtain, letting Damian and Marinette step out of the shadows.

"And your children."

"Children?" Batman says, only the slightest change in tone indicating his surprise. "You expect me to believe this?"

"I assure you, they're yours." Talia says easily.

Damian, always the more confident of the two, walks up to their father and eyes him up and down. "Don't look so stunned, Father. I thought you'd be taller."

Marinette raises an eyebrow at her twin. "Akhi, he is six feet and four inches tall already. Any taller, and he would be a tree."

Batman stays silent, choosing to glare? Stare? Do something that Marinette didn't know because the white lenses hid his eyes and his facial expression doesn't change.

.o0o.

The boat drives away, leaving Marinette and Damian with their father.

"You didn't know about us." Marinette states.

"No." Batman is not known for his eloquence.

"So Mother has made us your responsibility." Damian snarks, but there is an air of seriousness to it.

"Something like that."

Marinette squeezes her brother's hand for reassurance. "This isn't necessary. We can both do fine by ourselves."

"So do I. But things have changed. Your mother thinks that the two of you are better off with me for the time being."

Damian raises an eyebrow. "What do you think?"

"Better than with the League of Assassins." Their father replies.

"They taught us how to fight." Damian says hotly.

"And I take it, not much else."

"Actually, Father, that is not true." Marinette jumps in. "In addition to learning many forms of martial arts and how to wield plenty of weapons, Damian and I are years ahead of a normal curriculum and we are both fluent in twenty languages. We can also play multiple instruments. My brother prefers piano and violin, while I tend to favor woodwinds such as the flute and oboe."

Batman grunts and presses a button on his belt. The Batmobile opens, and the twins follow their father towards it.

"I'll drive." Damian says.

"No." Their father grumbles.

"I know how."

"No."

"Can I drive then?" Marinette asks.

"No!"

Once they're settled in the car, Batman hits the 'Call' button for someone named Alfred.

"Alfred."

"Yes sir?" The butler has an impeccable British accent, much like Marinette and Damian's. She can put on an American accent at will, but she preferred the sound of the British one. It was more structurally elegant.

"We're going to have company. Prepare two rooms."

"A sleepover? Oh, goody."

"Actually, we would like to share a room." Marinette says. "It would make us feel more comfortable."

"I shall prepare a bunk bed then."

"We don't have a bunk bed. Alfred, where-" The call hangs up.

The Batcave is everything Marinette has ever imagined. Dark, yes, but full of state-of-the-art technology, vigilante costumes, and a medbay off to the side. Plus, a lot of bats.

An elderly man greets them when they exit the Batmobile. "Welcome back sir. I presume this is the young man and lady of whom you spoke?"

Damian strides up to the man and tries to stare him down. "Hello, Pennyworth. I've heard about you."

Alfred bows. "At your service, Master Damian and Miss Marinette."

"Would you prefer it if we called you Alfred, Mister Pennyworth?" Marinette asks.

"If you are comfortable calling me Alfred, then yes, I would prefer it."

Damian looks around the cave. "Where are the rest of the servants?"

Alred raises an eyebrow. "I am the sum total."

"You have only one servant?" Her brother says condescendingly to Batman, who looks a little awkward.

Marinette squeezes his hand. "Akhi, do not be rude. Our father was gracious enough to let us stay, although he did not have to. It would be counterproductive to his nightly activities if there were too many people who knew about it."

"He's not a servant." Batman says. "He's a friend."

Marinette smiles at Alfred. "Pleasure to meet you, Alfred, friend of the Dark Knight." She curtsies with perfect posture, the way she was taught, eliciting a smile from the man.

Damian sniffs and walks over to the Batcomputer. "So this is the fabled Batcave. Grandfather told me all about it." Her brother sits down in the chair, inspecting the computer, then turns around and folds his hands, looking every bit like their grandfather.

"I, too, have heard about this place, but never from Ra's or Mother. It was Lady Shiva who informed me instead."

Damian frowns. "It is not your fault that Grandfather was always disappointed in you. He was... biased against women."

"Ra's has been disappointed in me since the day I was born. I do not care for his opinion." Marinette says easily.

She walks up the stairs to the loft with the vigilante costumes and grimaces. "Father, what is the meaning of these atrocities?"

Batman is nonplussed. "What?"

Marinette gestures to the Robin costumes. "This. Why are they colored like a traffic light? What happened to Gotham's Dark Knight, the epitome of stealth? Why were your proteges such eyesores? What exactly is the function of a bright yellow cape in the city of darkness?"

"This one does not even have pants." Damian says tiredly. "Why would one fight criminals without pants?"

"Master Dick was a boy when he wore that." Alfred says. "As for Master Jason and Master Tim, the Robin colors are now tradition. It is a legacy, the mantle being passed from boy to boy."

"Never very peacefully though." Damian comments. "The first Robin became Nightwing after a falling out with you, father. The second one took on the mantle not long after, and when he died, the third one, who found out your identity, essentially blackmailed you into taking him on. When the second Robin came back as Red Hood, he attempted to kill the third Robin on multiple occasions, did he not?"

"Akhi! Do you not have any tact? The death of family members is always a sensitive subject!" Marinette hisses, in Icelandic. It is highly unlikely that they will understand it.

"You don't seem too sad about Grandfather's death, ukhti." Damian retorts.

"Ra's holds no special place in my heart. He sent me to train with Shiva from birth. You and I may have both grown up fighting, but you were treated like a prince, akhi. I was the lowest of the low. You endured hardships, yes, but you have never died. Nobody dared to kill you in training. I did not have such luxuries."

"Would you like to see where you'll be sleeping?" Alfred asks. "It is getting late."

They follow him out of the Batcave and into the Manor.

"Are the others sleeping?" Marinette inquires.

"Hopefully. Master Dick is returning from Bludhaven tomorrow night. Master Jason currently at the Manor, recovering from some fractured ribs, and Master Timothy will likely be out for another six hours after Master Jason sedated him so he could get a full night's sleep. Miss Cassandra should be asleep as well, though I think she will now be awake from the sound of our voices and our footsteps."

"Cassandra Cain, correct?" Marinette says thoughtfully. "Daughter of Lady Shiva, Batgirl. A master at reading body language, capable of beating just about anybody in a fight. I was trained to match her, but my skills are nowhere as precise as hers."

"Yes. Miss Cassandra is very proficient in reading body language. She knows a lot more than she lets on." Alfred stops in front of a door.

"This will be your room. You will obviously have free run of the Manor, although I would suggest not going into any of the other bedrooms without the occupant's permission. The door on your left leads to a bathroom, and the door on the right leads to a game room."

"Thank you, Alfred." Marinette says, when it is clear that Damian will not be saying anything polite. "If it is alright with you, we would like to be alone now."

"Of course, Miss Marinette. Goodnight, Miss Marinette, Master Damian." The door shuts behind him.

Damian immediately gets to work, searching the room for any bugs and finding none. Marinette opens the closet and pulls out two sets of pajamas: one in green and one in lavender. She grabs the lavender ones and lays the green ones out on the bottom bunk for Damian.

"Akhi, I am going to take a quick shower. It has been far too long since the last one."

"I am claiming the bottom bunk, ukhti. I will investigate Ubu's location while you are gone."

Marinette heads into the massive bathroom and turns on the shower. Hot water comes streaming down immediately, and she marvels at the sight. Damian, being the heir to the Demon's Head, would be used to it, of course, but as a female, she was seen as far below his status and was treated as such. She didn't even know she was an al Ghul until after her first death.

Marinette knows that her twin brother was always treated with much more reverence, resulting in much more confidence and arrogance on his part. Damian has been exposed to the Pit, but he has never been killed. When she returned to Nanda Parbat at age nine, Damian was condescending at best. He did not believe her to be worthy of his time, no matter the blood bond between them. Just like Ra's al Ghul, the man he was trying to grow up to be.

She changed that when Talia ordered them to spar, with Ra's as a witness. They traded blows for hours, evenly matched, and it became evident that neither would lose unless the other collapsed from exhaustion. Ra's decided to end the spar, and Marinette left the room tired and sweaty, but satisfied.

Damian was a lot more willing to talk to her after that, and she finally got to bond with her brother, even if he was rude at times.

Ra's was not so easy to please. Marinette spent the rest of her time at the compound trying, but he would not acknowledge her no matter what she did. She would never be good enough anyway, so Marinette stopped trying. It wasn't like she couldn't take on any assassins he tried to send her way. (She killed six in the year she spent at Nanda Parbat.)

She and Damian bonded fairly easily after that. They never slept in the same quarter, but Marinette requested that they be put in the same room at the Manor for a couple reasons. One, so they could have some familiarity in this new city, and two, so they could plan Ubu's demise without arousing suspicion.

Marinette stares at the mirror as she dries her hair. Tan skin, littered with lighter scars of all shapes and sizes, not noticeable unless one looked for long. Her eyes are the same shade of blue as her father's, unlike Damian's piercing green. Her midnight black hair was chopped short for practicality in combat. She slips on the pajamas and heads out of the bathroom.

Damian is sitting on the bottom bunk, clad in the green pajamas with a laptop on his lap. "I found Ubu's location. He's also in Gotham."

"Good." Marinette says coldly. "That means we can get him ourselves."

"I shall make sure he dies a painful death."

"Only after we get the information, akhi."

That was another difference between them. Damian had no qualms about killing. He saw it as the only way to defeat someone in a fight, unless it was a spar. Marinette, while fully capable of ending a life, hated it. She did not kill unless absolutely necessary, or when the rage of the Pit overtook her, which did not happen almost at all. She had gotten a lot better at controlling the madness.

"Ubu does not plan on moving for quite a while. He is certain that he is safe here. We do not have to make a move tonight." Damian shuts the laptop. "You should sleep, ukhti. It has been quite a long day."

Marinette gives him a small smile. "It has been a long day for you too, akhi. We both have to sleep."