Well, here's the second oneshot. I was really strongly wondering if he should be Chat Blanc or Chat Noir. I wasn't going to keep him as Chat Noir since there is a different story where Chat Noir is a thief, but I have a hard time imagining Plagg being a white cat kwami. So instead, I'll just lay disclaimer. 'On the Prowl' is a very interesting (and dark) AU fic by ghostgirl19 where Chat Noir is an infamous thief. You should check it out if you haven't already.
"Kid, I'm not usually one to give lectures..."
"Then don't, Plagg," Adrien said, cutting off the cat kwami before another word could be spoken.
Plagg huffed angrily, muttering about how cheese was soo much easier to deal with than humans.
"Look, I'm not going to stop doing this. I need Ladybug's Miraculous. And the only way that I can get that is if I draw her out. And that only way to do that is if I target the same things she does."
"I can't even understand why you need her Miraculous!" Plagg said, throwing his paws (?) into the air in frustration. "As far as I'm concerned, all you need is a good wheel of camembert in your life."
"Plagg, I'm pretty sure that is the last thing I need in my life," Adrien quipped, completely ignoring the first half of Plagg's argument. "Look, we don't have time for this. We have to be at the Louvre in 10 minutes. Claws out!"
"Wai- whoa!" the little cat kwami yelped as he was sucked into Adrien's ring.
And there in Adrien's place stood Chat Noir, the renowned Parisian criminal. He stared down at the picture his desk, an unreadable expression on his face. "It won't be much longer now..."