Hopefully by the time in maybe season 7 or 8 in the future, if Marinette and friends figure out that Cerise used to be Lila, they are gonna have to find a way to expose her again. Wigs and contacts have one weakness. Water. Wigs are fake hair and it gets ruined alot by water or brushing it too much. Contacts are easy because it is never to be used for swimming or underwater. It causes bad irritation in the person's eyes. Plus, they get ruined badly in water and it cannot be fixed or used.
I hope they can figure something out soon. Getting Cerise in disguise wet and soaked will be the answer to expose her deception once and for all. Marinette may have exposed her true nature but not her entire deception.

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Adrien as Aiden told Sabrina to find a way to cause the sprinklers in the school to go off so it could soak Lila's wig for exposure to everyone to see her true deception. But they have to be unpredictable if Lila figures out what he's planning. He's known that she's persuasive and can always come up with lies to cover it up.

"We need to make it more practical Aiden" Sabrina said.

"Can you think of any accidental luck that has happened before?" Adrien asked.

"Chemistry class always has chemicals explode to cause smoke to trigger it," Sabrina said.

"Good idea. I hope you know more about chemistry because I don't" Adrien said.

"I do since Chloe forced me to do it for her," Sabrina said.

"Selfish brat. Why do you try so hard to earn her friendship when she treated you like a doormat?" Adrien scoffed.

"I thought one day she would change but after what she did to Marinette, I saw her true colors," Sabrina said.

"Let's hope it proves how foolish Chloe is to trust a liar because what Marinette told me, bad people always use Chloe as their pawns," Adrien said

"This plan better be foolproof" Sabrina replied.

"Oh, I have a plan but it has to be touchable on her," Adrien said.

"Her first class is Biology. You got one chance at this. If we fail, she'll see what we are up to" Sabrina said.

"Exactly," Adrien said.

"So don't get caught," Sabrina said.

"Got it. You can count on me and our friendly dark knight Claw Noir" Adrien said.

"That is if he can be stealthy in school," Sabrina said before heading to class.

"We'll see," Adrien said.

Of course. He did see Lila in disguise as always to fool everyone for decades like an illegal immigrant.

"Pathetic," He thought as he went inside the classroom.

He hypnotized the teacher to not get suspicious of Adrien's non-existent.

"Okay, class, we are gonna dissect a frog and I'm sure those who get nauseous, please ask me if you don't feel comfortable with this without excuses," The science teacher said.

Adrien didn't like this; this was never like his school but learning modern biology was a new start. He hesitated in dissecting the dead frog. It was too sickening to him and he spotted a lighter in one of the students' handbags. He needed a distraction and fast before Lila tried to come up with a lie to leave the class.

"Uhhh.....I think my stomach hit a nausea mode, doc" Adrien pretends to feel ill.

"You're excused," The teacher said.

Unknowingly he pickpockets the lighter and cigarette for an idea to use to trigger the sprinklers. And fast before teachers see him do his supernatural. He sees the sprinklers on the ceiling and just as Felix instructed him on how it's done is if anything like smoke or very hot fire, it sets it off. So he ignited the lighter and lit the cigarette, causing smoke to billow. The smoke touched the sprinklers and they all set off spraying water everywhere.

He can hear screams in every classroom, even the halls too. He chuckled at how much Lila was gonna feel that she couldn't escape with her lies. He hides in the boiler room to transform back to Claw Noir so everyone can know he set off the sprinklers.

"I hope it worked because she can make another lie to get the hell out of trouble," Plagg said.

"Felix said that contacts and wigs don't work well in water. Plagg, claws out" He transformed into Claw Noir.

He comes out and does not care if he's wet but he likes to make a dramatic entrance.

In biology class, everyone was soaking wet and not only they were wet, but they could finally see that 'Cerise' definitely had her wig soaked and it couldn't stay in her head due to the water. It fell off to reveal her pixie-style hair. The water that got in her contacts was irritating to force her to remove them or it would get stuck in the back of her eye sockets.

"What the?! Who are you?!" They saw her real face.

Lila then realized her cover was blown, "Uhh....." She was too caught and could not make a lie to fool them.

"A psycho bitch and a compulsive liar she is to deceive everyone. I'm sure one of your classmates tried to warn you" Claw Noir comes in the classroom to test Lila's nature, "So, can't swim, huh? Can't exercise that much in gym class because of a fake injured leg? An arthritis? Well, I say you say these lies to skip the gym to prevent your wig from falling"

"You! You're getting in my way too often!" Lila snarled.

"Did I? It seems you walked past a black cat and got jinxed with bad luck. You can't deceive anyone anymore, Lila Rossi" Claw Noir knows she's gonna perform her dark magic in front of the school so everyone can see.

"You ruined my plans, Noir! But now I bring your doom!" Lila raised her hand.

"Everyone out, now!" Claw Noir said.

"You just can't let me have a life I had over a century!" Lila yelled.

"A psycho bitch like you don't deserve a great life!" Claw Noir turns his staff into nunchucks with claws on each end like blades.

"Time to end it!" He spins it at her.

"I got other plans for you!" She disappears again to escape.

"YOU COWARD!" Claw Noir yelled.

"Damn it! She got away?!" Ladybug came in too late.

"Fuck! But now her identity is revealed" Claw Noir said.

-

The sprinklers were turned off and fire trucks came but there was no fire in the school.

"This better be a serious prank someone pulled," The fireman said.

"A prank? I simply call it dumb luck to expose a deceitful person out of the bag. Everyone's eyes get lied and fooled a lot but recordings from phones never lie" Claw Noir saw everyone looking at their recordings of Lila's deception. They saw the footage of her wig and contacts being removed.

"Next time something happens like that, never let your eyes be deceived," Claw Noir said before taking his leave before the sun came out from the clouds.

He hides inside a shadowy place with Ladybug coming after him. He took out a bottle of blood to feed, thirsty all day too as he felt refreshed.

"Kitty, are you alright?" Ladybug got in.

"Nine lives, milady. And totally thirsty for blood which I came prepared" He took a sip of blood from a bottle.

"Good. But now with Lila ditched her identity she'll be deadlier than ever now that her cover is blown" Ladybug said.

"The feeling of revenge feels so good. I waited decades to make her feel humiliated like I was" Claw Noir purred in delight.

"I guess the tables are turned," Ladybug said.

"But you're right, she will get insane to get back at me. Although I do have a feeling she'll use Chloe for that" Claw Noir said.

"No kidding, Kitty," Ladybug said.

"I'm dangerous like a tiger. Rawr" He flirted with her.

"You're so silly" Ladybug replied.

"But it's true, Bugaboo. My paws have been dormant while my claws still seek justice" Claw Noir paced her.

"You just haven't found your soft spot yet like your soft paws," Ladybug said.

"One day I will," Claw Noir said.

"That is if you can learn to get your ass in gear," Ladybug said before moving his face away from her neck.

"I know that. But don't make me kick yours again" Claw Noir said.

"And here I thought you're turning into a gentleman for ladies," Ladybug said.

"I am, Bugaboo" Claw Noir pulls her close.

"Always treat ladies fairly, kitty," Ladybug said before groaning softly from his hands gripping her butt, "Still angry that I will always kick your bloody ass?"

"Not as your partner," Claw Noir said.

"Paws off" Ladybug was so gonna knee punch his groin if he doesn't do so.

"Ok Bugaboo" He let go of her.

"You are still out of your element, kitty. You never learned about modern fighting style?" Ladybug asked.

"I have but I never done that on bad guys," Claw Noir said.

"That is why I'm capable of kicking your ass that night. You wouldn't last if they killed you" Ladybug said.

"Milady, I'm very supernaturally strong. I can break their limbs easily" Claw Noir smirked.

"But you have a supernatural weakness," Ladybug said.

"I know," Claw Noir said.

"You may know how to fight big boys but you don't know the difference in fighting girls," Ladybug said.

"Wanna bet at me using my full strength?" Claw Noir dared her.

"You said you don't hurt innocent ladies" Ladybug sneered.

"Yes, even you" Claw Noir teased.

"Every woman knows a man's weakness" Ladybug chuckled.

"Really? The groin?" Claw Noir asked.

"Yes" She tried to kick his groin but he caught her ankle.

"Slow, but strong for a lady. And I know a woman's weakness is getting punched in the breasts" Claw Noir glances at her perky breasts.

"You pervert! Eyes on me!" Ladybug felt flustered by his glance.

"Whoops!" He then got head locked by her legs.

"Bad kitty. You know is disrespectful to be a pervert" Ladybug said, making her grip tight for him to get the message.

"Sorry about that" Claw Noir said.

"Anyways, meet me at Notre Dame tonight. I'm sure the House of God will see you're a friendly unholy being" Ladybug said, knowing how scared he was of the crucifix.

"Alright, Bugaboo" Claw Noir agreed.

"Your lungs really make you undead to breathe for air" Ladybug released him.

"I don't need to breathe, milady. That move, you should teach me that. See ya" Claw Noir morphed into a bat to fly.