Lt. Kellaway approached the hero duo with a notebook. "I just want to ask some questions regarding your...partnership with Big-Head."

"It's not a partnership," said Ladybug. "More like he gets in our way."

"You have to admit," said Chat Noir as he sat on a railing. "Some of his methods do work."

"Since when is hurting people in the process 'work'?" Chat Noir didn't respond. "Exactly."

"So, you don't really work with him?" Kellaway asked.

"Not willingly," said Ladybug.

The lieutenant paused to smoke his cigarette. "Then you must have no idea who he really is?"

Chat Noir shook his head. "No. We don't even know who we really are."

"We're not allowed to," said Ladybug.

Kellaway sighed. "That's the problem with superheroes. You can't really trust anyone if you have a secret identity." He was quick to notice the sad look on the heroes' faces. "Ahem. Anyway. Do any of you know about the Mask of Loki?"

Chat Noir dented his chin with his finger. "No, we haven't. Now that you mention it, some of the villains we faced have been demanding it. I wonder what Hawk Moth would want for it?"

Ladybug pretended like she had no clue, but the truth was she did know. "Whatever it is it can't be good."

"I know," said Kellaway. "Because the Mask of Loki is what turns people into Big-Head."

Chat Noir raised his eyebrows. "People? Are you saying Big-Head could be more than one person?" He suddenly thought back to that illustration of the 18th century woman version of Big-Head in his father's book. "What exactly does this Mask do?"

"Whatever you want," Kellaway said grimly. "It grants you the power to run on cartoon physics as well as invincibility. You've seen Big-Head get blasted to pieces only to come back right as rain in the next second, haven't you?" The heroes nodded. "Unfortunately, it also makes you say, 'To hell with the consequences of my actions!' You think you can do whatever you want and not worry about the result of your actions."

"How do you know that?" asked Ladybug.

"Because I wore it." The heroes' eyes widened. Kellway paused again to smoke. "I wore it and thought I could clean up crime with it. Ended up killing a lot of people and nearly lit a stick of dynamite in my best friend's mouth. Took every ounce of power I had to resist that urge."

"That sounds...brutal," said Chat Noir.

"So, if you don't know who's wearing it," said the lieutenant. "You must know someone acting...off. Can you think of anyone who's been acting strange? Like violent mood swings, lacking sleep or maybe acting kind of secretive?" Ladybug and Chat Noir thought about it, but they couldn't. "Well, if you can think of someone who might have it, bring them to me." He wrote something on two slips of paper. "This is the hotel I'll be staying at. Find me when you think you've found the Mask. Oh, and one more thing. Stay away from that giant working for the mayor."

"You mean Walter?" asked Ladybug.

"Yeah. He and I go a way back. Almost killed me multiple times."

"Trust us, we try to avoid him. He's so...scary."

Kellway chuckled. "Yeah. I know that."

Back at home, Marinette lied down on the bed. Tikki said, "We probably should be careful. Anyone of the citizens of Paris could have it."

"That's just it," said Marinette. "This would mean anyone we know could be a suspect. Nino, Rudi, Nathaniel..." Her eyes widened. "Adrien!" She started to scream. "What if it is Adrien! Oh! Have I fallen in love with a psychotic maniac?!"

"Marinette! You don't know that!"

"That's just it! I don't know!" She slammed her face and groaned. "If only there was a way to track that stupid Mask down!" She sighed sadly. "That lieutenant was right. I can't trust anyone."

Adrien sat on the bed, deep in thought. Anyone could have the Mask. His friends, his bullies (what little he had), maybe even... He didn't finish the thought. "This whole thing stinks."

"Stinks? Like cheese?" asked Plagg. "I wish."

"This is serious, Plagg! Someone might have a magic that turns people into a living cartoon and we don't know who it is!"

"Chill out, Adrien. Someone might slip and reveal themselves."

"And how long will that be?"

Meanwhile, Rudi snored loudly as he slept on the bed. Under his bed, the Mask glowed a faint green.

A short one, I know. Consider it filler.