[[WMG:XJ-9/Jenny Wakeman]]
-> ''"I want to have friends, and hang out like normal teenagers do! But who would want to hang out with a rusty hunk of metal like me?"''

->Voiced by: Creator/JaniceKawaye

The main protagonist and the "16-year-old robot" to which the title refers, a state-of-the-art sentient gynoid automaton created by Dr. Noreen Wakeman five years prior to the series, though she was designed as a 16-year-old girl. Though XJ-9 was designed to be Earth's protector, armed to the teeth with a wide range of weapons, devices, and transformations, she desires to live the life of a normal teenager and often makes this desire quite apparent to her friends and creator.

* ActionGirl
* {{Adorkable}}
* AllOfTheOtherReindeer: No matter what she does, she will always somehow end back up as the school freak.
* AmazonianBeauty: Though you can't tell from the character designs, XJ-9 is 6 feet tall, according to Professor Wakeman's specs.
* BadassAdorable and CuteBruiser
* BalloonBelly: She inflated more than once, despite being made of metal.
* BareYourMidriff: Her chassis design is meant to mimic this, complete with a large exposed screw for a "belly button".
* BewareTheNiceOnes: Her temper is incredibly human, all things considered. Combine that with a HyperspaceArsenal, and you get literally-explosive anger.
* BrattyTeenageDaughter: To Nora sometimes.
* CoolLoser: It's hinted that if the school weren't under the tyrannical reign of two {{Alpha Bitch}}es, Jenny wouldn't be a reject at all.
* [[CuteMachines Cute Machine]]
* DoAnythingRobot: Her arsenal is downright {{Hammerspace}}y.
* [[DoesNotKnowHisOwnStrength Does Not Know Her Own Strength]]: Sometimes, depending on if it's [[RuleOfFunny funny]] at the moment.
* FemBot
* GenkiGirl
* GirlishPigtails
* {{The Hero}}ine
* IJustWantToBeNormal: Combined with IJustWantToHaveFriends: Being a superpowered robot wouldn't be so hard for her if there were more bots as advanced as her.
* JerkWithAHeartOfGold[=/=]NiceGirl: She often shifts between these, depending on whether the episode is making liberal use of SurroundedByIdiots.
* {{Jetpack}}: Not so much as one as a flying robot, as she has rockets as part of her body.
* MagicSkirt: Justified, that skirt's made out of metal.
* PinocchioSyndrome: Averted - she's perfectly fine with being a robot, but wants acceptance and assimilation... which sometimes means playing the trope straight.
* RedHeadedHeroine: Once had red body paint, and her makeshift human form is a redhead.
* RidiculouslyHumanRobot
* RobotGirl
* RobotHair: She sports a pair of metal pigtails. They house two of her jet thrusters.
* SuperStrength: "The strength of a million-and-seventy men," if the theme song is to be taken literally.[[note]]If it is to be taken literally, that means Jenny should be able to bench press between 67,504 tons if the men used as reference are of average strength, and 551,038 tons if they're around the current human limit.
* [[SurprisinglyGoodEnglish Surprisingly Good Japanese]]: Helped by the fact that her VA Creator/JaniceKawaye is a Japanese-American who speaks the language fluently.
* TelescopingRobot: She provides the trope picture.
* WakeUpGoToSchoolSaveTheWorld
* YoungerThanSheLooks: Technically has been alive for about 5 years, but has all the mentality of a teenage girl... usually.
** However the fact that Jenny being physically five years old, has had a drawback of being forced to be in Kindergarden for the majority of the episode "I was a Preschool Dropout".
* YouGottaHaveBlueHair: Most of her ''body'' is baby-blue metal, jet-powered pigtails included.

[[WMG:Brad Carbuckle]]
->Voiced by: Chad Doreck

Jenny's best friend and next-door neighbor.

* CasanovaWannabe
* CoolLoser
* CrouchingMoronHiddenBadass: His over-enthusiasm for trying to be a hero can be more trouble than help, but when he gets serious he can be pretty significant help.
* DistressedDude: Well, he ''is'' a NonActionGuy.
* IJustWantToBeSpecial: To contrast him with Jenny's desire to be a normal teenager.
* NiceGuy
* PluckyComicRelief
* RedHeadedHero

[[WMG:Tuck Carbuckle]]
->Voiced by: Audrey Wasilewski, Creator/JessHarnell

Brad's little brother.

* AnnoyingYoungerSibling
* BadassAdorable
* DistressedDude: Almost as often as his brother.
* {{Gasshole}}
* {{Keet}}
* KidAppealCharacter
* LargeHam
* WholesomeCrossdresser:
-->'''Tuck:''' What? Can't a guy wear pearls and taffeta around here?
-->'''Nora:''' Strictly speaking, only after 6.

[[WMG:Nora Wakeman]]
->Voiced by: Creator/CandiMilo

An elderly spinster robotics scientist and the one who built XJ robots, who is often simply refers to as "Mother" or "Mom" by Jenny and her sisters.

* AmazinglyEmbarrassingParents: On occasion.
* CoolOldLady
* GadgeteerGenius
* MadScientist: One of the saner ones.
* MamaBear
* MeddlingParents
* MotherlyScientist
* NeverMessWithGranny: She used to be part of the skyway patrol prior to the series. And even in present-day she's far from any definition of "weak".
* ParentalObliviousness
* TheProfessor
* SiblingYinYang: With Wisteria, science VS nature.
* TrulySingleParent

[[WMG:Sheldon Lee/Silver Shell]]
->Voiced by: Creator/QuintonFlynn

Jenny's self-proclaimed romantic admirer.

* ADayInTheLimelight: "Agent Double-0 Sheldon".
* AbhorrentAdmirer: Towards Jenny at first, but mellows out of his stalking in later episodes.
* {{Adorkable}}: He is quite geeky, but has likeable traits to him.
* AsianAndNerdy: He's apparently half Asian.
* BadassNormal: In "Agent Double-0 Sheldon".
* ChivalrousPervert: Towards Jenny. It may seem sometimes that he's only interested in Jenny's robot abilities and design, but in other episodes proven otherwise. For example, once Jenny wanted him to remove all her equipment, and he complied (although reluctantly) and spent hours on end removing all of it despite knowing how she would look afterwards. [[DependingOnTheWriter It depends on the writer.]]
* CrouchingMoronHiddenBadass: He was a space pirate [[spoiler:''for decades'']]. And a secret agent.
* DistressedDude
* DoggedNiceGuy
* DudeWheresMyRespect: It's not that he can't ever get any respect, but he has to work ''much'' harder for it.
* GadgeteerGenius
* HeroWorshipper: A variant in that he's smitten with XJ-9 as well as seeing her as a role model.
* LargeHam: As the Silver Shell.
* OlderThanHeLooks[=/=]ReallySevenHundredYearsOld: [[spoiler: After the episode "Good Old Sheldon" he's only physically 15, but now officially 105 years old. Holy cow.]]
* PostKissCatatonia: In the Christmas episode, Jenny gives him a peck on the cheek and he is frozen in position then slowly and rigidly tumbles down the stairs.
** Averted in "Double-0 Sheldon", were she once again gives him a peck on the cheek, and merely responds with a happy smile.
* RescueRomance: Sheldon meets and falls hard for Jenny after she saves him from some bullies in shop class in the episode he's intoduced in.
* {{Robosexual}}: [[GettingCrapPastTheRadar "Twin-manifold access ports?]] Ohh, baby!"
* SingleTargetSexuality: Jenny-sexual.
* StalkerWithACrush: In his introduction episode he was definitively this, but in later episodes he is more friendly and helpful towards Jenny.
* TookALevelInBadass: In "Agent Double-O Sheldon".
* UndyingLoyalty: In the Christmas episode, where he's the only person to stay by Jenny's side when the entire town has turned against her by this point.

[[WMG:Jenny's "sisters" XJ-1 through XJ-8]]
->Voiced by: Creator/JaniceKawaye (XJ-1), Creator/KathSoucie (XJ-2, XJ-3, XJ-4 and XJ-5), Creator/CandiMilo (XJ-6), Audrey Wasilewski (XJ-7 and XJ-8)

XJ-9's prototypes and "sisters".

* BabyLanguage: XJ-1.
* [[BigLittleBrother Big Little Sister]]: XJ-8.
* BreakOutTheMuseumPiece[=/=]MisfitMobilizationMoment: Once, after Jenny got captured by the Cluster. With the exception of XJ-8 they don't appear to be combat-ready, but do okay as they apparently have the same [[TelescopingRobot telescoping armor]] Jenny does.
* CrossdressingVoices: XJ-8.
* CuteClumsyGirl: XJ-3.
* CyberCyclops: XJ-3 and XJ-6.
* TheEeyore: XJ-7.
* FlawedPrototype: All of them. Unlike most examples of the trope, though, they are clearly functional testbeds that do well within the parameters of their design.
* FrickinLaserBeams: XJ-2.
* HiccupHijinks: XJ-2 again.
* MoodSwinger: XJ-6.
* MotorMouth: XJ-5.
* NeatFreak: XJ-4.
* RidiculouslyHumanRobots: The XJ sisters appear to be gradually working towards this. May also be why XJ-8 isn't the last in the line.
* SuperPrototype: XJ-8 is physically stronger than Jenny - to the point that she's really not looking forward to fighting her - but doesn't have Jenny's "quirk and charm" according to Dr. Wakeman.

[[WMG:Queen Vexus]]
->Voiced by: Eartha Kitt

* ArchEnemy
* BigBad
* {{Determinator}}: Even after losing multiple times to Jenny [[spoiler:even to the point of losing her status as Queen]], she still insists on attacking Jenny any chance she gets.
* EvenEvilHasLovedOnes: Genuinely cares about her people. Jenny even exploits this at one point, telling her that if she doesn't surrender, she will destroy one of Vexus' mooks.
-->'''Mook:''' Mama!
-->'''Vexus:''' ''(horrified)'' My baby!
* EvilMatriarch: Subverted. She may be evil and the BigBad of the show, but she still loves Vega (almost to the point of being [[MyBelovedSmother overprotective]], even.)
* GodSaveUsFromTheQueen
* HellishPupils
* IneffectualSympatheticVillain: Starts off as a huge threat, but becomes an easily dispatched threat later on. This really gets hammered home, though, when [[spoiler: she eventually loses her dictatorship over Cluster Prime]].
* TotallyRadical: She would have blended in while she was destroying Jenny if she only realized that TheRoaringTwenties was over for almost a century now.
* TsurimeEyes

[[WMG:Kilgore]]
->Voiced by: Creator/TaraStrong

* BadassAdorable
* {{Catchphrase}}: '''Surrender'''
** And '''[[DynamicEntry "BA-NAH!"]]'''
* DeathbringerTheAdorable: Sure the name may sound threatening, but it's so gosh-darn cute!
* {{Determinator}}
* EnemyMine: With Jenny in "Enclosure of Doom".
* EvilSoundsDeep: Spoofed in the first few seconds of the episode he's introduced, as it's not wound up yet.
* HarmlessVillain
* IneffectualSympatheticVillain
* MyLittlePanzer
* TheNapoleon: If it's 10 1/2 inch stature has any indication.
* OnlyOneName
* OutGambitted: In "Enclosure of Doom"
* ScareChord: Spoofed in "Enclosure of Doom".
* SayingSoundEffectsOutLoud
* ThirdPersonPerson
* VillainWithGoodPublicity: Sure it may be threatening, but what part of "Villian" dont they (Refering to the people who take a liking to it) understand?[[note]]All of it apperently.[[/note]]
* WindUpKey: It's Powered by Watch Spring and a wind-up key.

[[WMG:Vega]]
->Voiced by: Creator/ThoraBirch

* BladeBelowTheShoulder
* {{Expy}}: In universe, she's this for Jenny among her circle of friends, who, incidentally, [[YouAllLookFamiliar look just like Jenny's friends back home]].
* PowerGivesYouWings: Dragonfly wings, in her case.

[[WMG:Misty]]
->Voiced by: Audrey Wasilewski

* [[EvenEvilHasStandards Even Mercs Have Standards]]: Even though she only does hero work for money and sees no problem with meditating while a KillerRabbit destroys the town, she was clearly disgusted that her former teammates lazed around and actually bet against Jenny as she fought against a [[ItMakesSenseInContext Giant Monstrous Frog]].
* [[EvilCannotComprehendGood Mercenaries Can't Comprehend Heroics]]: She was absolutely confused by Jenny's remorse for [[SympathyfortheDevil scaring the Krust Cousins to tears]].
* EvilFormerFriend: She was pretty much Jenny's best female friend. But Misty got more ruthless to the point she only thought of helping people if she could benefit from it. All to the point where Misty nearly kills Jenny in a fight where Jenny [[CurbStompBattle was clearly outmatched]]. The only thing that stopped Misty and snapped her somewhat back was Jenny [[TearJerker still pleading that she still saw her as a friend]].
* MoralityChain: Arguably Jenny.
* PunchClockHero: In "Mist Opportunities".
* SuperpowerLottery: Let's see: she's a skilled [[SupernaturalMartialArts martial artist]], has SuperStrength, can [[FlyingBrick fly]], turn into [[SuperSmoke mist]], shoot [[EyeBeams laser beams from her eyes]], and [[MindManipulation control peoples' minds]].
* SuperSmoke: Her most often used superpower is her ability to turn into a cloud of purple mist at will (hence her name).
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