I use Timebreaker, having watched this on Netflix, but I also like the name Timebreaker a lot better than Chronogirl, since Timebreaker is a play on Timekeeper.
Disclaimer: see chapter 1
Chapter 13: Timebreaker
Adrien didn't think he had ever been so close.
If The Unclocker had even waited a millisecond longer, Adrien knew his secret identity would have been toast. He was lucky - insanely lucky - that The Unclocker has bought his bluff.
"Why is your nose bleeding?"
Chloe's voice was a knife through Adrien's relief.
"Huh?" Adrien said intelligently.
Chloé pointed to Adrien's nose. "Your nose. It's bleeding."
Adrien pretended to be surprised - like it was a natural nosebleed, and not one caused by him face planting into the Eiffel Tower.
"You're also looking a little red," Alya noted. "Are you feeling okay?"
"I'm fine," Adrien replied. "Probably just allergies. I'm gonna go clean this up."
"Good," Chloé agreed.
Adrien walked out of the park, covering his nose with his hand. Just as he was ducking behind a wall, he heard a scream.
"Alix's been Akumatized!" Alya yelled. "And she's got Marinette!"
"Run!" Max called.
"Away," Nino added, and Adrien could picture him pulling Alya out of the way.
"Time to transform," Adrien said.
Plagg flew out of his shirt, finishing off a piece of cheese. "Do we have to?"
"Yes. Claws out!"
The transformation didn't feel as good as usual as it flowed over Adrien. Usually, it gave him a burst of energy, but that time it would seem that all the bursts of energy were gone.
Chat Noir took a deep breath and leaned against the wall for a moment after transforming. He was a lot dizzier than he cared to admit.
Chat Noir counted five before forcing himself to stand straight and face Timebreaker, who was taunting Rose down from her position in one of the trees.
"Alix!" Chat Noir called, landing behind the skater. "Bet you can't catch me!"
"Challenge accepted," Timebreaker replied with a grin.
Chat Noir extended his baton and went sky high, but Timebreaker smashed into his baton and knocked him back to Earth.
He rolled, recovering quickly, and ducked as Timebreaker swiped at him.
He ran a lap, Timebreaker following him, before he did the baton trick. This time, he landed off the path.
Timebreaker followed without hesitation, and ended up face-down in the dirt for it.
"Can't skate in the dirt, huh?" Chat Noir teased. Somewhere, in the back of his mind, an idea began to form.
"Fine with me, there's plenty of others to catch," Timebreaker replied.
"But you're not one to turn down a challenge, are you?" Chat Noir questioned.
Timebreaker huffed and walked across the grass awkwardly. Chat Noir slowly backed up, letting Timebreaker stumble and fall as she tried to reach him.
And then Chat Noir backed up into a wall, which was admittedly not part of his plan.
He extended his baton and went over Timebreaker, to her great annoyance, but the move put him back on smooth ground.
"Now its a fair playing field," Timebreaker snarled.
"I think I preferred it the other way," Chat Noir said, dodging a swipe by Timebreaker. He stabbed at her skates, causing her to stumble, but he didn't hit the akuma.
Timebreaker grabbed his baton and yanked him closer. She moved to touch him, but Chat Noir rolled out of the way at the last second.
Hawkmoth's mask appeared over Timebreaker's helmet, and she grinned.
"Tell me, Chat Noir, where is Ladybug?" Timebreaker asked.
"Honestly, no idea," Chat Noir replied. "But don't worry, I'm perfectly capable of handling myself."
"But one-on-one is a little boring, don't you think?"
Chat Noir blinked, trying to figure out what that meant.
Timebreaker sped off, and Chat Noir chased after. She was just at top speed when Chat Noir extended his baton and sent her flying.
Just as her time-travel powers kicked in.
Timebreaker flew over the edge and right into the middle of the group of scattering students. Another Timebreaker was off on the side, just transformed.
"Marinette," Chat Noir muttered, remembering how his classmate was frozen early last time.
He used his baton to lend next to the girl, who startled when she saw him. He had just enough time to push Marinette out of the way before Timebreaker reached them.
But it wasn't enough to get himself away too.
A tap on the back, and suddenly Adrien was standing in the middle of a group of panicked students.
Timebreaker landed face-down in front of them, and Adrien suddenly realized that he must be in the second timeline now.
As if it wasn't confusing enough.
"Chat!" Marinette cried. "What did you do to him?"
"I sucked up all his energy," Timebreaker replied. "And he has a lot of it too. Now, for his miraculous."
Marinette looked around for something, anything, that would help her. Maybe if she threw a shoe?
"I'm not out of time yet, Timebreaker." Chat Noir landed behind himself, baton fully extended.
Both Ladybug and Timebreaker did a double take.
"What the-" Timebreaker started, but her gaze drifted as another version of her rolled up to the party.
"Ooh, a miraculous for the taking," she cooed. "Thank you so much."
"I must have bumped my head," Marinette muttered. "Because I'm pretty sure I'm seeing double."
"You'll find taking that miraculous is going to be harder than that," Chat Noir said.
"Except both of us are still in the game," Timebreaker 1 said.
"And there's only one of you," Timebreaker 2 finished.
"Finally, the odds are even," Chat Noir replied.
As the superhero and the two akuma victims bantered, Marinette slowly backed away.
"We must already be in the second timeline," Marinette muttered to Tikki. "I have a faint recollection of being frozen, but it happened so fast-"
"You must have been hit almost immediately," Tikki agreed. "Thankfully, Chat Noir saves you this time."
"And it might have cost him his life," Marinette muttered. "Why would be go out if his way to save me?"
"Chat Noir has met you before, Marinette," Tikki replied. "Besides, he's always been the type to throw himself in front of anybody - not just Ladybug."
Marinette nodded. "True. And now it's my turn to help him. Tikki, spots on!"
Okay, seeing himself frozen like that was weird, but Chat Noir knew he couldn't afford to worry about that.
If either Timebreaker managed to grab his miraculous, then Hawkmoth would have a miraculous, whether or not Chat Noir still had his. And, of course, the frozen him might detransform if the ring was taken.
Chat Noir was glad he had a plan.
Chat Noir extended his baton into the space between the roller blades and the skates and lifted Timebreaker 1 up into the air, but Timebreaker 2 reacted so fast he had to drop 1 almost immediately.
"Having problems keeping up?" Timebreaker 2 asked.
Chat Noir focused on 2, but then his eyes noticed a red figure right above her. Ladybug had finally arrived.
"Actually, I was just wasting your time," he admitted. "Cataclysm!"
He slammed his hand into the pavement, and the pavement deteriorated into crumbles - hopefully rendering the skates useless.
"Clever," Ladybug admitted, swinging down next to him.
"I thought so," Chat Noir replied. "Now, would you mind taking care of these to for a little bit?"
"Gladly."
Hopefully, this will be the last time I have to figure out how to distinguish between two different versions of the same person...