CDA

CDA (Child Detection Agency) are the fourth antagonists turned-minor protagonists of Monsters Inc and supporting characters in Monsters University. At the end of both films, Roz is their leader.

As a group of monsters from the movie Monsters, Inc.. They are a CIA-like group whose main job is to search and take away any type of children contaminant. They come in a wide variety of forms and all wear bio-hazard suits, to avoid contamination. If any human object appears in the Monster World, they arrive to destroy it using a metal dome that will cause whatever that's placed under it to explode harmlessly and decontaminate any who come in contact with such objects. Their decontamination methods are often painful: Anyone who has been decontaminated by the CDA will be forced to wear a plastic cone over their heads like a pet who has been given surgery and is not allowed to lick the wounds.

Monsters Inc
The CDA is first seen arriving at the Monsters, Inc. factory after Jerry calls the agents upon hearing Charlie's alert about a child's sock on George Sanderson's back. The agents arrive at the factory to remove the sock, which is then destroyed into smithereens, and its remains are vacuumed up. Then the agents decontaminate George by shaving his fur off, having him showered, and placing a cone on his head. The agents are seen again arriving at Harryhausen's after the Bartender calls the CDA about a human girl nicknamed Boo in the restaurant. They arrive at the restaurant and round-up almost every patron, including Celia Mae, for decontamination, and they envelop the restaurant in a gigantic blue force fie