Arch-Enemy: Has three: the Delightful Children from Down the Lane (his adopted cousins), Chad Dickson (aka Numbuh 274, the former Soopreme leader of the KND and Numbuh One's former mentor), and Father (his Evil Uncle).
Loved I Not Honor More: Abides by this philosophy until "Operation G.I.R.L.F.R.I.E.N.D.", where he chooses protect Lizzie over a mission. Unfortunately, Lizzie has already had enough and breaks up with him.
Real Men Wear Pink: He likes Rainbow Monkeys (Though he may not know it) as shown in the credits of "Operation S.A.T.U.R.N." and is shown to wear Rainbow Monkey underwear as shown in "Operation B.U.T.T."
We Used to Be Friends: His issue with Chad stems from this. Nigel had idolized him, and Chad's betrayal had stung him deeply.
Numbuh Two / Hoagie P. Gilligan Jr.
"Come to Numbuh Two!"
The team's technology expert who loves cracking bad jokes. As Sector V's technology officer, he designs many of the 2×4 technology the team uses In his off time he enjoys building and flying airplanes and solving mysteries at his school. Voiced by Benjamin Diskin.
Meaningful Name: Hoagie P. Gilligan Jr., appropriately enough, a twofer reference. First, there's "Gilligan," a reference to the title character of Gilligan's Island, who was also second-in-command on the S.S. Minnow. Then there's the "Jr.", often used at the end of a boy's name to signify that he's the second male in the family to have inherited his father's name (a seemingly throwaway detail that foreshadows the importance of his Disappeared Dad, Hoagie P. Gilligan, Sr.)
Ship Tease: If you didn't see the hints that Numbuh 2 and Numbuh 5 like each other before they got married in the Grand Finale, watch the series over again. You'll notice a lot of things that you missed the first time around.
"What do you think I am, an airhead or something?"
The team's medic, and the most feminine of the kids, a happy-go-lucky girl who loves Rainbow Monkeys. In battle, she specializes in diversionary tactics. She seems to have a lot of admirers, but her heart obviously belongs to a certain Aussie. Voiced by Lauren Tom.
Uptown Girl: It's pretty subtle but compared to Wally, Kuki clearly comes from the more financially affluent family of the two with having successful parents (or at least a mother, who is the Head of Accounting at work), and her family lives in a fairly large house with a nice interior while Wally and his family resides in a much smaller house located in a more rundown neighborhood that is next to some electricity pylons. It is noted however that they are not necessarily rich and poor respectively, but more along the lines of upper-middle class and lower-middle class.
What Could Have Been: She was originally going to speak only in Japanese (with subtitles). However, with she and Numbuh 5 (who was originally going to be quiet) being the females in the group who don't speak, they decided to change it out of fear that people would complain from the alleged sexism of having two girl characters who didn't speak (or rather, one who didn't and one who couldn't speak English).
"Right, first I'll be cleaning your adult-lovin' prissy little clocks..."
The team's combat specialist. He's incredibly lacking in book smarts, but his combat prowess more than makes up for it. In his off time, he competes in adult disapproved sports. Voiced by Dee Bradley Baker.
Drill Sergeant Nasty: Any rare moment he gets to be a leader, he becomes this. One scene in Operation M.I.S.S.I.O.N shows Numbuh 4 training a group of villains for bowling like boot camp, complete with even wearing a soldier's helmet. He was also a military general in Operation W.H.I.T.E.H.O.U.S.E.
Four Is Death: As the aforementioned team's resident Blood Knight, he is the one who ends up in combat a lot. He tends to be the unluckiest member of the group, yet has his happy moments. In perspective, he is the only member of the KND to not suffer a Gender Bender (and manages to be the only male by the end of Operation F.U.T.U.R.E.) as well as marrying the girl of his dreams.
The team's second-in-command, she's the one that keeps a level head under all circumstances, even when everyone else loses it. In her spare time, she's a candy hunter, which brings her in conflict with her rival Heinrich and candy pirate Stickybeard. Voiced by Cree Summer.
But Not Too Foreign: She's half-French, even though both of her parents are black. It's likely that one or both of her parents could have African and French ancestry (either in France or in an African country that was once under French rule and still has French influence after gaining its independence, like the Cote D'Ivoire [Ivory Coast]).
Dope Slap: Gives these to Numbuhs 2 and 4 (usually with her hat) if the former makes bad puns or if the latter does something stupid like thinking having all adults (good and bad) wiped out being a good thing.
Enforced Cold War: With Cree; both of them have to keep up the act of two loving sisters at home while pointing lasers at each other beneath the dinner table.
Numbuh Five: The last time Numbuh Five didn't help someone kidnapped by the Delightful Children, they did something she can't ever forgive! Numbuh Four: What?! What did they do that was so bad?! Numbuh One: ... They made me bald.
Numbuh Five: Something just happened. It's as if million of gallons of ice cream just... disappeared.
Noodle Incident: It's mentioned in passing in one episode that Numbuh Five was once leader of Sector V. She stepped down from the position after some incident, but we never find out. Other bits point that she couldn't take the stress of full on leadership. She nearly has a panic attack when Nigel reinstates her as leader before he leaves for his galactic mission. He reassures her she always had what it took to lead the group. Considering she would later take over the role of commanding the entire K.N.D, he wasn't kidding.
Ship Tease: If you didn't see the hints that Numbuh 2 and Numbuh 5 like each other before they got married in the Grand Finale, watch the series over again. You'll notice a lot of things that you missed the first time around.
What Could Have Been: Originally, Numbuh Five wasn't supposed to speak, but this was scrapped as the show creators thought having only the boys in the group speak (Numbuh Three, as stated above, was supposed to only speak Japanese) would bring about Unfortunate Implications.
Numbuh Six / BradleyA skunk that Numbuhs Two and Three took under their wing since "Operation: C.A.M.P.". After foiling Chester's plan of making a work camp out of an actual kid's camp, he is inducted into the Kids Next Door as an honorary member. After getting critically injured by Cree, Numbuh Two upgrades him into half-skunk, half-robot R.O.B.O.-B.R.A.D.L.E.Y. in "Operation: H.O.S.P.I.T.A.L.". He is voiced by Dee Bradley Baker.
"Of all the stupid things in the stupid world of stupid people acting stupid, you boys are the stupidliest! It's like you're trying to win a stupid contest but you're too stupid to take a stupidity test!"
The former Head of Decommissioning and current Global Tactics Officer. She's a shrill girl with a particular intolerance for the male sex. But due to her behavior, she has next to no friends. Voiced by Jennifer Hale.
Numbuh in this case. When you look at her rank: "to eighty-six" means to eliminate/kick out or (for restaurant cooks) to take something off the menu.
Her first name is meaningful in the UK and Ireland where she is from. In the UK, "fanny" is a vulgar slang term for the female genitalia on par with the word "cunt" . "Cunt," in both UK and US slang, is also used to mean someone who is unpleasant note (it's stronger than "bitch" and is probably one of the few curse words out there that is still considered shocking and will never be heard uncensored in the media. In fact, it's on George Carlin's list of the seven words you can't say on TV), so combining that with Fanny's personality, and you have a Meaningful Name that somehow got past the censors -- at least the ones in the UKnote (in American English, "fanny" is one of many slang terms for the human buttocks and isn't considered obscene at all. Funny and a tad improper — yes, but not so obscene that it's unmentionable).
The Medic: A flashback to Numbuh Five's second Mission shows 86 wearing hat with a cross and checking on the injured. How she went from a medic to head of decommissioning is not explained.
Never My Fault: Her introduction episode, in which she never takes responsibility for her own blunders that wound up hampering Sector V's efforts for the mission. Thank goodness karma kicked in when the spy she thought she captured turned out to be an undercover agent (Number 362 in fact), whose mission was ruined by 86; she gets harshly chewed out for it. (For added irony, throughout most of the episode she was putting down the boys in the group for the most minor screw ups. End of the episode saw a girl doing this to her.)
Too Dumb to Live: She's really dedicated to her job, so much so that it blinds her to the most obvious points of logic. Such as in Operation E.N.D., when she is sent to capture and decommission Sector V based on the fact the computer says they're turning 13. Numbuh One points out they're in the same age group, they even went to kindergarten together. But nope, if the databanks says they're teens, it must be true! No point in questioning it.
"As Kids Next Door Soopreme Leader, I hearby order you to... go long!"
Originally the top spy in the KND, she is now its current Soopreme Leader. Due to her busy and demanding job, she's often stressed, but at heart she stands stubbornly for the rights of kids everywhere, and if the situation arises she can be fun-loving too. Has grown to form a close friendship with Nigel Uno. Voiced by Rachael MacFarlane.
Operation: Z.E.R.O. too, when the KND museum was under attack. Sector V was the closest. She ordered them to come back to the base which was also under attack but Nigel refuses till the museum was safe. Once Sector V did that as well as save the base single-handily, she chews out Nigel for disobeying orders. She does apologize later though once Grandfather is defeated, admitting if she had listened to him before the whole mess would've never happened.
I Just Want to Be Normal: In "Operation: I.T.". To be fair, in her world being normal means spending all day doing whatever you want in a giant treehouse and going on exciting missions.
"Bravo, Mr. Uno. You managed to skillfully outwit a bunch of children. The question is, do you have what it takes to play with the big boys?"
The mysterious head villain, Father is a man who wears a suit of shadows and is skilled in very dark powers. He schemes to enslave all children and turn them into his twisted version of "delightful". But despite his dark and malicious appearance, sometimes all he wants to do is curl up in a bathrobe with some Rocky Road. He is voiced by Maurice LaMarche.
Achilles' Heel: He can be rendered helpless by large amounts of water or cold substances, like ice cream. Strangely, he eats it occasionally, espescially when depressed.
Adorkable: His child self can qualify as this. As for his adult version, it depends.
Clothes Make the Superman: Proabaly a power inherited from Grandfather (its never really explained) but the shadow look is a cover giving him his powers and intimidating nature. The one time its taken off, we see the real Father (and he's surprisingly rather nerdy looking.)
Does Not Like Spam: He hates broccoli. In fact, he claims that everyone hates it, and that the only reason that adults make kids eat it is so that they don't have to. In fact, in "Operation: I.T.", Numbuh 362 was able to subdue him by threatening to forcefeed it to him.
Freudian Excuse: Grandfather makes him look like a saint and the reason he refused to help fight him wasn't out of evil but out of pure fear. Grandfather also liked his brother better than him and treated him like crap. We also see Father break down and curl up on the floor when threatened to be forcefed broccoli because Grandfather did it to him in such a way he was traumatized for life!
The Man Behind the Man: In the earlier episodes, the Delightful Children were the main villains, though he was mentioned in the first episode. In "Operation: C.A.N.N.O.N." the Delightfuls mention a curfew alert stating that they had to leave their butt whupping on Sector V or else Father would be angry.
Meaningful Name: His real name comes from real life figure Benedict Arnold who was best known as a traitor to the U.S during the Revolutionary War. As shown in the movie, when given the chance to fight against Grandfather alongside Numbuh Zero, B. Uno was too scared to do so and exits, not once but twice.
Moral Myopia: Has own experiences of child abuse from his father, yet is perfectly fine with bullying kids during his grown up years.
The Delightful Children from Down the Lane / Sector Z
Clockwise from top: David, Lenny, Ogie, Bruce, Ashley
The Delightful Children from Down the Lane/ Sector Z
"Hello Kids Next Door. Perhaps you would like to try kicking our posteriors now?"
Father's eerie children, supposedly an adult's view of the "perfect" kids. They are educated, well-dressed and polite, but uncivilized in their burning hatred for the Kids Next Door. They always appear clustered together, move as one and speak in perfect unison. They are voiced by Benjamin Diskin, Dee Bradley Baker, and Cree Summer.
Hypocrisy Nod: They never get tired of calling the KND Stupid or foolish, despite the fact that the reason their plans keep usually fail is because their own intellience can be compared to that of a box of hammers.
Jerkasses: Despite their image as "perfect children", they're sadistic and cruel to everyone else of their own kind, particularly whenever it's their birthday where they never share their cake with other kids and flaunt it.
"There was no way I was going to turn over everything I ever built, everything I ever worked for, to a bunch of snot-nosed kids!"
Former Soopreme Leader of the Kids Next Door idolized and loved by all, he turned evil the moment he turned thirteen. He then served as a high-ranking member of the Teen Ninjas, and lost all the respect he had to his name. Generally cocky and approving of himself, both before and after his betrayal. Voiced by Jason Harris.
Becoming the Mask: Sort of. He's faking treachery and is a secret teen operative for the KND... however, after many defeats, his hatred for Numbuh One becomes real and he tries to kill him in his final appearance in the show.
Good Is Not Nice: He was nice when he was Soopreme Commander. But when he showed he was a deep cover agent, his jealousy still made him act like a nasty tool.
Hoist by His Own Petard: During Nigel's training days, Chad showed him a move that left Nigel flat on his back. In his final battle against Numbuh 1, Nigel uses the same move to beat him.
Irony: As Numbuh 1 states, he was the best of the KND and he could've just bowed out gracefully while still keeping his Mole status. Indeed, if he hadn't let his pride get the better of him, he would've left a great legacy behind. He was the one who trained Numbuh 1 after all, so the kids would've definitely looked up to him after his departure. Maurice had the common sense to realize this, and allowed himself to be "decommissioned" so the KND would at least know of his reason for going bad and not have a grudge against him. Chad, however, acted too rashly (trying to destroy the KND base and then fleeing), so he'll forever have a traitor status to his name despite working behind the scenes.
It can be argued that his false Face-Heel Turn was so the villains would be more convinced. After all, a legendary KND suddenly wants to go evil for no reason and they aren't supposed to be suspicious?
It's Personal: The underlying resentment between Chad and Numbuh One over his betrayal led to a fight between the two in Operation: T.R.E.A.T.Y. By that point, it had become extremely personal.
Lamarck Was Right: His parents are Destructo Dad and Mega Mom, and he later becomes more of a recurring threat than they ever were.
The only time they are only mentioned (as his parents) is during "Operation E.N.D." but they aren't mentioned by name. They attend many supervillain meetings, but their bond between Chad isn't mentioned again.
Cree Lincoln / formerly Numbuh ElevenNumbuh Five's older sister and former Kids Next Door operative, skilled, cool and determined. Her relationship with her sister is very strained, but deep down they really do love each other. She is a high ranking member of the Teen Ninjas and Father's apprentice. Voiced by Cree Summer.
Late to the Party: Throughout most of season two, she seen trying to get the KND moonbase claiming "It's all part of the plan". By the time she does however, Chad (who had turned traitor) had already tried and failed in his bid to destroy it.
Child Hater: He has one exception, his children... One of them being Numbuh 86.
Continuity Cavalcade: Due to his nature as a leader of villains, and due to the show's nature of strong continuity, he is most commonly seen with a good portion of the adult villains seen up to that point.
Hoist by His Own Petard: The reason why Mr. Boss's plans always get screwed over by the Toiletnator? Because he refuses to let the Toiletnator participate in his plans, thinking that he'll screw up, so the Toiletnator "takes things on his own level".
Yank the Dog's Chain: After the reveal that Fanny is his daughter, he says he'll fix pancakes for his children. He offers Numbuh 1 and his son's (Mr. Boss's son) sector for pancakes in a nice tone, but then tells them to go to a diner. He even turns off the lights on him.
Laura Limpin aka The Big BadolescentAn adorable young girl who, whenever angered, transforms into a monstrous teenager. Voiced by Grey DeLisle as Laura and Dee Bradley Baker as The Big Badlosecent.
"Operation F.L.U.S.H." — He takes out five other villains thinking they're KND operatives in disguise. Of course, the five villains in question had just successfully taken over the Sector V treehouse, and then (just as he thought how could things get any worse) Numbuhs 1-5 (The actual members of Sector V who have been all excused from school early) show up and kick his butt. He's even stupider than we thought.
Friendly Enemy: He was friends with Numbuh Four for awhile ("Operation M.O.V.I.E."), and joined the announcers in the finale. Though, in the CM/HB example he referred to Numbuh Four (actually Nightbrace) as his arch-nemesis. Gets kinda weird when it's revealed in a canon comic that he's Numbuh Four's uncle.
Villains Out Shopping: He helped Numbuh Five in Operation Licorice and saved her and her team in Operation Afloat. You can say that he has a soft spot for her.
We Can Rule Together: To Numbuh Five. It almost succeeded until she remembered her friends, but now it leads to below.
Worthy Opponent: To Numbuh Five. She's the only person in the world who can beat him in a sugar swallowing contest (Black John Licorice might disagree). She's the only one to give him an affection nickname of, "Sticky Buns" in return.
Freudian Excuse: According to Mr. Fibb in Operation: C.O.W.G.I.R.L., he and Mr. Wink "grew up" because Mr. Fibb didn't get to go to the prom with Lasso Lass. This would also explain their hatred toward the KND - the kids probably remind them of their younger selves in the Cowboy Kids Club.
Humongous Mecha: Expect any chairs they may be sitting in to be a Super Chair of some kind.
Villainous Breakdown: In Operation: C.O.W.G.I.R.L., when their Freudian Excuse is revealed. Another immediately follows when it turns out Lasso Lass really did like Mr. Fibb, but he's so shy he runs away screaming at the thought of kissing her. A similar incident occurs between Mr. Wink and Clip-Clop, and they never appear as major villains again.
Gramma StuffumAn old lady obsessed with force-feeding her disgusting food to children to fatten them up, believing that a child that is too fat to move can't get into trouble. Voiced by Grey DeLisle.
The Interesting Twins from Beneath the MountainA pair of Japanese twins, who work for Father. Voiced by Tom Kenny and Tara Strong.
Butt Monkey: Where to begin...they get attacked by a dog, have their most destructive vehicle destroyed, get beaten up by the Japanese KND operatives, disguise themsleves as a KND operative only to get attacked by Wink and Fibb, and the Crazy Old Cat Lady. Seriously, compared to these guys, Numbuh 4 is the luckiest kid in the world.
Never My Fault: He does this a lot, such as in his first appearance where he blames Abby for tainting the candy with the taste of asparagus when she warned him before hand that being greedy will put that curse into effect. It's also his grudge for the Guatemala Incident as after he sacrificed his beauty due to yet another curse. He once more blamed Abby for not stopping him from eating his caramels and supposedly leaving him stuck in that state. Turns out she was trying to find a way to break the curse.
One-Winged Angel: In his first appearance after obtaining a jewel, he transforms into a monster with power of candy. Numbuh Five defeats him. After falling into a chocolate volcano, he returned as a powerful monster who can turn things into chocolate by touching it. He was cured by the KND.
Noodle Incident: Throughout the series he remains angry at Numbuh Five for "Guatemala". His last appearance in Operation CARAMEL reveals that he performed a ritual to get delicious caramel by sacrificing their best trait (in his case her beauty) and blamed Numbuh Five for allowing it to happen.
GrandfatherFather and Monty Uno/Numbuh Zero's father and an Evil Overlord who once ruled the entire planet. He's by far the most dangerous enemy the KND have ever faced and makes Father look like a saint compared to him. Acted as the Big Bad in The Movie. Voiced by Neil Ross.
Card-Carrying Villain: The first thing he says after being reawakened is to thank Father for "reawakening the pure evil" laying dormant within him.
Curb-Stomp Battle: It didn't take him a whole lot of effort reconquering the world, likely because his minions are borderline invincible.
The Dark Times: His previous reign. After that, it's little surprise the KND are so fearful of adults.
Dystopia Justifies the Means: His intent is nothing less than a Crapsack World where kids, and the second time, anyone who had ever been a kid, toils endlessly to create tapioca pudding for his consumption. It's a lot worse than it sounds.
Evil Overlord: Once ruled the world with an iron fist before Numbuh Zero betrayed and defeated him.
Eviler than Thou: To literally every villain in the Rogues Gallery once they find out his plan to turn everyone that's ever been a kid into Senior Citizombies includes them. Father outright states that Grandfather is eviler than him before reviving him, calling him "The World's Most Ultimate Evil".
Expy: He seems to be partially based on Aku from Samurai Jack — a black, shadowy monster who stands a couple stories tall in his natural state, can manipulate fire, and his very awakening pells doom for the whole world.
Fisher King: When he rules the world, he uses his Reality Warper abilities to convert into an old-style Crapsack World complete with child labor, Industral Era-style factories making tapioca pudding for him to eat.
Genre Savvy: Is smart enough to NOT underestimate Hope Springs Eternal and understands he hasn't really won until he's destroyed the Book of KND, which let Numbuh Zero defeat him the last time. He also doesn't go out to find it until nearly the entire world is under his control and the Kids Next Door are all but destroyed.
Laser-Guided Amnesia: Literally; his memory was erased by Numbuh Zero using some kind of laser, reducing him to a harmless old man until he's "recommissioned" by Father. This is only way to defeat him, as all other attempts failed.
Rapid Aging: His primary ability is to age everything he touches, though not only does he age them rapidly, he turns them into his 'Senor Citizombie' minions. All individuals he ages gain the ability to do it to others.
Reality Warper: He's capable of changing the world as he sees fit, normally to a more "old time" look.
Transformation Sequence: Unlike Father, who just grows his "shadow suit" back, Grandfather sucks in the shadows from everything in the room to form his after being reawakened in a much more elaborate fashion.
Ungrateful Bastard: Not even reviving him wins Father any affection; he flat-out tells him to leave after being revived.
Elizabeth Devine (Lizzie)Numbuh One's demanding girlfriend. While she's quite clingy, she does genuinely care for Nigel, but his work for the Kids Next Door strains their relationship. Voiced by Grey DeLisle.
Characterization Marches On: In her first appearance, she brainwashed Nigel into being her obediant boyfriend and even tried to make him destroy to his friends. The KND fight back and Nigel is unbrainwashed, but the episode ends with Lizzie getting the date she wanted anyway. Later episodes more or less completely ignored her origin story, and considerably softened her character.
Easily Forgiven: Nigel and the rest of Sector V had no hard feelings over the little matter of her having originally tried to brainwash him. Though it's mostly Numbuh One and Numbuh Three. Numbuh Two and Four openly dislike her, dreading any contact with her at all. They just don't verbalize it much due to fearing her bad temper (at least Numbuh Two fears her temper). Numbuh Five is tolerant of her at best.
Tsundere: Type A and hard, sometimes dipping into yandere'ish tendencies in her more extreme moods.
Tommy Gilligan (The Tommy)/ formerly Numbuh TNumbuh Two's little brother, Tommy is an excitable child ready to fight adult tyranny. Unfortunately, circumstances effectively halted his KND career. He now fights solo as "The Tommy". Voiced by Dee Bradley Baker.
Broken Streak: In "Operation: C.A.K.E.D.-F.O.U.R." he breaks his family's Tube-A-Thon losing streak (Despite his brother coming in 2nd).
The Cowl: Parodied. He tries to be but can't pull it off.
Maurice / formerly Numbuh NineA former K.N.D agent (Numbuh 9) who is decommissioned when he turned 13. However it's revealed he's part of a secret sect of teenagers who are still loyal to the KND and doing undercover work to help them from behind the scenes. Voiced by Khary Payton.
The Mole: He was never truly decommissioned and his typical teen attitude is all an act so he can spy on the teens for the K.N.D
Nice Guy: Very popular with the K.N.D for his personality. His decommission is quite heartbreaking for the organization.
The Promise: During his younger days two of his fellow operatives get hit with Chicken Pox despite the mission being a success. He vowed he was would track the source of the chicken pox used by the teenagers and destroy it. He never manages it during his tenure with the K.N.D but after being decommissioned and turning mole for the group. He does fulfill his promise.