Chloe (subliminal)

Chloe was furious, ever since Alya joined the class her influence has waned and others like that brat Marinette had gained the confidence to stand up to her and even unseated her as Class President. Already with the rest of the class with the exception of Sabrina and Adrien ignored her, her orders considered nothing more than hot air.

But she would regain her position as Queen of the class, others laughed at her being the mayor's daughter saying behind her back that she was useless without her "daddy" and his money. But that money gave her access to resources the rest of her class couldn't even imagine.

That's how she got her hands on this, a special video that effectively made everyone who watched it brain dead and in an easily suggestable state, or at least that's what the vendor claimed, she had to test it before using it on her classmates and there was already a very willing subject.