He generated dark energy between his clasped hands, then opened them to reveal a black butterfly, followed by a second.

"Take flight, my little akumas. Find those eternal rivals, and evilize them!"

They fluttered before him a moment, then up to the small squarish opening in the window and over the bustling Paris cityscape.

The pair of akumas reached the exhibit hall, drifting in through a skylight opening. One hovered along a wall, tracking the powerful negative emotion of Mandy until she neared the restroom. When she entered, it swooped after her from the shadows, low and out of sight before the door swung shut. Inside, it waited patiently at the ceiling until she was finished and washed her hands, then swooped down and collided with her small purple purse as she clutched it.

It metamorphosed into black energy, then enveloped her. A light magenta energy mask in the shape of a butterfly appeared around her eyes, and she smiled roguishly.

The akuma back in the main hall flew from the high ceiling down to Clover before it could be spotted. It connected with a lavender compact she clutched tightly, and the same process occurred with her.

Energy identical to theirs adorned Hawk Moth's visage, which appeared in their minds.

Diva Disaster. Sinister Spy. You've both fostered anger towards one another, building up to this moment. Now you will channel that feeling into defeating Ladybug and Cat Noir! But you must also take their Miraculouses and bring them to me!

Prominent images of Ladybug's earrings and Cat Noir's ring appeared before both Mandy's and Clover's eyes, then faded away.

You may continue your duel to your heart's content, but only once you bring me those Miraculouses!

Mandy's dark energy dissipated to show a dark purple mini dress, her small purse, black thigh high boots, and heavy dark mascara. Her hair was even longer than before, flaring out and hovering in place.

"Yes, Hawk Moth," Mandy, now Diva Disaster, replied, "I'll prove that I'm the greatest!"

Back in the audience, Clover's dark energy faded to reveal a deep crimson version of her form-fitting spy suit, complete with long gloves and boots. Her wide low belt with its heart shaped buckle was a darker metallic color, as was the heart-shaped jetpack backpack she wore.

Sinister Spy, you are now the most powerful spy in history. Use your incredible skill to take the Miraculouses from Ladybug and Cat Noir. Do so, and you may defeat your rival, proving you are superior!"

"Clover?!" Alex cried the moment her friend had been affected by the akuma. "W-what's going on?!"

Alex's hands hovered near her friend in concern, but she was leery of being affected by whatever was happening.

"Yes, Hawk Moth," Sinister Spy said evenly, "I'll show everyone what I can do."

She jumped straight up, ignited her jetpack, and flew to the stage in a flash. Heads craned in shock and gasps filled the air. The background music playing through speakers was cut off, and security guards hovered nearby, unable to reach the airborne woman.

Then Diva leapt into view from the far end of the hall and landed on the stage below her rival. People became even more panicked, recognizing akumatized villains, and left their seats to get to the exits.

"You're going down!" Diva yelled.

She aimed her open purse towards her enemy, causing impossibly long tendrils of purple fabric to shoot out in a wide arc. Spy darted to safety, but they struck and wrapped around all the security guards nearby. After a moment, they were released from the fabric to reveal that their outfits had changed to purple and black versions of their uniforms.

"I'm the best here!" a bearded security guard proclaimed in a haughty voice to the others.

"No, I am!" another replied.

They postured comically to one another, oblivious to anything else as Alex looked on from a distance, incredulous.

"They've been Mandy-fied?" Alex said in shock as Sam finally joined her.

"And that's Clover- and Mandy? This is insane!" Sam lamented.

Mandy belted out an ear-splitting upgrade to her signature nasal laugh.

"I, Diva Disaster, am the greatest! All will be like me! And I'll destroy you, Clover!"

Spy looked at the guards with disdain, then to her foe.

"It's Sinister Spy, not Clover! Making others mimic you doesn't prove anything! And I'm superior to you in every way!"

Spy's hand moved in a blur to toss metallic balls that exploded, rocking the stage. But Diva managed to dodge them with her enhanced agility. A few people remained in the hall further away from the action, including a woman with short, fuchsia hair in a blue blouse and white jeans, and her cameraman.

"This is Nadja Chamack at the Expo Center where the Paris Fashion Show has been interrupted-"

The sound of explosions and shouts caused her to look over her shoulder in concern.

"-by two akumatized victims. We can only hope that Ladybug and Cat Noir will arrive to save the day once again," she said.

On the opposite side of the hall, Adrien, Nino, and Alya watched the villains in alarm. Alya held her phone to film the unfolding drama, fascinated by their arguing.

"I've never seen two akumatized fight each other," she said, then looked around worriedly. "Hey, where's Marinette?"

Adrien and Nino glanced about, but saw no trace of her.

"I'm going to go search backstage," Adrien said, "you two should get outside."

He ran off before Nino and Alya could reply.

Nino sighed. "Well, Alya?" he asked.

Alya pursed her lips, gave him a look, and kept filming.

Marinette was in the restroom, her purse open. Tikki, a red kwami with a black spot on her forehead and a pair of thin antennae, looked expectantly at Marinette with her large blue eyes.

"Tikki, spots on!" Marinette said.

Her earrings flashed, and the creature spiraled while shrinking to land inside one of them. Five spots appeared on each earring, and Marinette struck a variety of graceful, dancelike maneuvers. During this, white energy formed a mask that covered the upper half of her face and a red bodysuit with black spots. A small disk-shaped object formed at her hip, held in place with a string around her waist. After a final pose, she sped out the door.

On the opposite side of the hall, Sam and Alex darted backstage, X-powders open. Each pressed a button within the gadgets disguised as compacts, causing a musical sound. A shimmer of white light replaced their clothes with a green form-fitting spy suit for Sam and a yellow one for Alex. Wide silver belts containing a heart belt buckle and a pink heart-shaped jetpack backpacks completed the outfits.

Elsewhere, Adrien searched for Marinette, shook his head, found a dressing room, and entered.

"Plagg, claws out!"

Adrien stuck his first forward, and the kwami burst out of his shirt pocket to spiral into the ring on his middle finger. A light green cat paw insignia appeared on said ring. Adrien moved into a series of poses, and white energy moved along him to reveal a black catsuit, complete with cat ears, a tail, and a black half-mask. He flung open the door and ran back to the main hall.

On the stage, Diva swung her purse at Spy, who ducked it and countered with a palm strike that was sidestepped in turn. Ladybug, then Cat Noir, and finally Sam and Alex all arrived within moments of each other from different directions.

"Who are they?" Alex asked, looking towards the Parisian heroes.

The butterfly-shaped light masks returned to the faces of Diva and Spy.

That's them! Hawk Moth's voice called out to the akumatized duo. Take her earrings and his ring, and bring them to me!

Frowning in disapproval, Diva pointed to Spy. "Don't interrupt me from beating down this loser, Hawk Guy!" she yelled.

Spy growled, pulled out a lavender hair dryer, and blew a powerful blast of wind. Diva dove and bounded for cover, narrowly escaping being flung away like the padded folding chairs behind her that spun away as if in a hurricane.

"Milady," Cat Noir said to Ladybug with a look of concern. "We've got double trouble."

"Hey, Cat Noir. Yeah, and who are those two?"

Sam and Alex were circling around to try to surprise Spy. Ladybug took her large yo-yo weapon from her hip, but hesitated, not wanting to have it blown back at her. Instead, she and Cat Noir ran towards Spy. She swung the hair dryer their way, causing them to dodge.

Diva shot out more fabric tendrils at Spy, who flew expertly to avoid them all. But the tendrils continued to extend all the way to the front entrance towards Nino and Alya, the latter busy with filming on her phone. They gasped, not being able to move quickly enough in time.

But a laser sliced the fabric the moment before it reached them and the pieces drifted to the floor. Alex stood off to the side holding her Laser Lipstick.

"Whoa, thanks," said Nino, followed by similar sentiment from Alya.

She smiled in response, gestured from them to the door, then rejoined the fray.

Sam flew above Spy and pressed her heart belt buckle. It burst out, trailing a bungee cable, but her target rotated and moved to avoid the attack. Sam landed on the floor beside Alex, Ladybug, and Cat Noir, as the buckle and cable retracted back with a light clang.

"Thanks for the assist, especially saving those two kids," Ladybug said, eyes still on the villains. "But who are you two?"

"Sam. And they're calling themselves Diva Disaster and Sinister Spy. But we know them as Mandy and Clover," the redhead replied quickly, pointing to each in turn.

"Alex," said the brunette, "we're spies from WOOHP in the U.S. We do human protection."

"Look out!" Cat Noir shouted.

A large roll of fabric shot out of Diva's purse, just missing the heroes. Spy held a star-shaped dark blue perfume bottle, and sent a massive cloud of freezing spray. The still-extending fabric was in its path and frozen in place.

Diva growled in fury at Spy and sent dark energy into the frozen fabric. It shattered into innumerable shards like shrapnel. Ladybug was in front of Sam in an instant, spinning her yo-yo as a shield to deflect projectiles and protect themselves. Cat Noir did the same for Alex by twirling his staff in a blur.

"Wow. Thanks," Alex said, crouched defensively.

"Yeah, thank you!" Sam said.

Ladybug and Cat Noir made sounds of acknowledgement, eyes on the akumatized duo. The energy masks returned to their faces, indicating Hawk Moth communication.

Hawk Moth leaned forward in frustration. Who are those other two? No matter. Stop fighting each other and stop them all!

Diva sneered, her hair billowing behind her.

"Don't tell me what to do!" she replied.

With a gesture, dark energy shot wildly out of her purse at Sinister Spy. Her foe's eyes widened, but arm extended forward, she tapped her ring to form a shell of energy, absorbing the blast. Spy smiled, twisted the front of the ring, and the shield shot out in all directions as a wave of energy. The four heroes yelped in surprise, but managed to run and leap clear of the attack, pushed away from the force.

Nadja and the cameraman were thankfully out of range, further back into the hall when the action started, while Alya and Nino had exited a while ago.

"Ugh! They seem more powerful when they're fighting each other," Sam said.

Alex helped Sam to her feet, sparing her a quick glance.

"How do we stop them?" Alex asked.

"Let's go outside to separate them," Ladybug said.

The others hummed in assent, darted out through sets of double doors at the entrance, and took off running. A moment later, the doors and wall connected to them blew outwards from a blast of dark energy. The heroes gasped and spun around, and Ladybug glanced at the spies briefly.

"Actually, this is too dangerous for you!" Ladybug said, "Cat Noir and I are the only ones who can do this!"

Sam and Alex glanced at her, unconvinced.

"Clover is our best friend," Sam countered, pointing at Sinister Spy, "and we've known Mandy a long time. We can help!"

Eyes on their opponents, Ladybug and the others avoided Spy's tornado blasts and Diva's fabric attacks.

There's no time to argue, Ladybug thought. She nodded in resignation.

"Okay. They're being controlled. The way to free them is by destroying a specific object each has with them," Ladybug said frantically, while weaving through attacks.

Diva pulled out a pair of shades, laughed briefly, then began to shine brighter with purple energy causing everyone else to look on in shock.

A/N: Thanks for reading. Please vote and review if you enjoyed. Hope to post the next part as soon as you're ready. It's all set to go.