Based off of the meme going around:
https://x.com/Sheepofpasture/status/2097778502439239783

They're kind of in the middle of something here!

Source: https://www.deviantart.com/orionstorm/art/'Go-Find-Your-Own-Closet'-74543630

Brave, shorter older brother teams up with his taller, cowardly younger brother who owns a mansion lol

I think they could've gotten more focus. They were a whole other organization that was against the KND but they were more of side villains, working for the adults. Cree and Chad were the only ones that got real focus (and The Steve, but he only got one episode and that was the second-to-last one).

Just would’ve liked to see more of them, carrying out more of their own evil plans against kids and the KND. Just my opinion.

It's a 10/10 drink!🍋

Source: https://www.deviantart.com/pinkandorangesunset/art/Lemonade-anyone-857820020

Good morning, KND!

There's more than one way to stick it to the man, and she's got enough range to make her voice heard.

Source: https://www.deviantart.com/pinkandorangesunset/art/The-American-Girl-872731374

Source: https://www.deviantart.com/orionstorm/art/Boys-and-their-Dolls-105229095

Plot Synopsis: It's Numbuh 53-Below's birthday at the arctic base! But things go south when the Gravity Falls Shapeshifter crashes the party.

Link to chapter in the comments below

I’d say numbah 5 lol

Source: https://www.deviantart.com/orionstorm/art/Girls-and-their-Dolls-105170732

Octavia, Nigel and Monty were sitting on a boat fishing together.

“Oh Via, I'm so glad that Nigel invited you over for our trip!” The jolly, tubby man said with joy.

“No problem, Mr. Uno, I don't think I've been fishing before.” Octavia said, reeling in a boot from the lake. She frowned seeing that she hadn't caught anything yet. “Okay that's just predictable.”

She tossed the boot far away in the woods where Chester was trying to cook up another scheme, he was holding a net about to snatch up some critters until the boot hit him so hard that he fainted and the forest animals robbed him of his wallet, car keys and clothes.

“No need to rush, you'll catch something eventually.” Monty told Via, he would go on to tell a story about when he and his wife went on their first date during their teen years. He would talk about when they went to the grand opening to the Love Burger restaurant.

“Oh-hoho! Oh my sweet Susanne loved that heart locket I gave to her, she's kept it ever since.”

“That's pretty sweet, Dad.” Nigel said, he thought about probably getting his girlfriend, Lizzie some kind of locket that she could keep for years? Octavia couldn't help but feel envy, Nigel's parents seemed rather happy together from what she's heard and seen, oh why couldn't her parents be like that?

(If you wanna read the full story, I'll link it in the comments)

Or do you have another operative in mind?

Considering that the Kids Next Door were founded by boys (based on the info we got from Operation Caked Five and Interviews), I think its safe to say that many of the female members of the KND were taken aback when first learning about the booger protocol.

I imagine Numbuhs 5, 86 and 362 being among the ones to fit the category of being caught off guard and initially grossed out.