History Characters / LabRats

* AntiHero: He's noble and responsible, but it's hard to deny that he's also pretty whiny, childishly petty and arrogant.

* {{Flanderization}}: He changes from a uptight ControlFreak [[JerkWithAHeartOfGold with a heart of gold]] to a short-tempered, egotistical and power-hungry perfectionist in the later episodes of Bionic Island.

* FourTemperamentEnsemble: Chase cycles through all of these at some point. He starts out as Sanguine, but as his confidence levels go way, way down, he becomes Melancholic. In late Bionic Island, he becomes a more stubborn, arrogant version of Choleric and stays this way for the beginning of ''Elite Force'', but after [[spoiler: he abolishes the Mission Leader title]] he gets much, much kinder and goes to Phlegmatic.

* InferioritySuperiorityComplex: Chase is highly arrogant and obnoxious, but he's also by far the most insecure of the Lab Rats, and it's been shown that although he brushes it off, Adam's constant teasing gets to him.

* LargeHam: As the show progresses, he becomes the most dramatic of all the main characters due to his intensity and neurotic personality.

* TheBigGuy: Adam is the muscle of the group due to his large height and super strength.

* DeadpanSnarker: Although not as much as Chase or Leo, she definitely has her sassy moments.

* {{Flanderization}}: She becomes a bit ruder in Season 4.

* GenkiGirl: While Bree can be a rational person, she can also be very reckless, childish and irresponsible.
* GirlyGirlWithATomboyStreak: While she's proud of her own femininity, she's also a skilled fighter, can be a immature slob on occasion and even challenges people to do loogie contests with her.

* [[JerkWithAHeartOfGold Jerkette with a Heart of Gold]]: Her vanity and brattiness do really come out in a few episodes, with "Three Minus Bree" being the most notable, but she's brutal when it does.

* BlackAndNerdy: While not as smart as Donald and Chase, Leo is quite intelligent and resourceful for his age.
* ButtMonkey: He's usually the most bullied kid in school due to his scrawny nature and nerdy personality. Even his own siblings likes to poke fun at him, though they do love him, but they still find his impulsiveness and brash attitude quite obnoxious.

* CrouchingMoronHiddenBadass: A bit goofy and impulsive, but he still had the guts to stand up to both Marcus and Krane.

* JerkWithAHeartOfGold: Leo can be an arrogant, self-absorbed and devious manipulator but he's also very caring, friendly and loyal to his family. He's rarely a cruel type of jerk, although he gets mean when he gets jealous. This is especially apparent in Leo's Jam, when he embarrasses Chase in front of the entire school so that he can win over the girl he likes (who at the time likes Chase).

* {{Narcissist}}: To point that he has an art vault, complete with multiple copies of famous paintings with his own face painted on it, which he calls Daven-Portraits.

* FakeGuestStar: She is a recurring character who appears quite frequently.

* AmbiguousDisorder: It's regularly implied that Caitlin suffers from some sort of disorder showing very poor social skills, low intelligence but great creativity (especially with dominoes) and is extremely eccentric, exactly what however is unspecified.

* WouldHitAGirl: He's got no problems with kicking Bree in the stomach.

->'''Played by:''' Maile Flanagan

* SitcomArchNemesis: Eddy and Sasha despise each other.

* MsFanservice: Like her brothers, her good looks is part of the reason she was chosen. Especially in her new SpyCatsuit, as pictured above.

* ButtMonkey: He's usually the most bullied kid in school due to his scrawny nature and nerdy personality. Even his own siblings likes to poke fun at him though they do love him but still find his impulsiveness and brash attitude quite obnoxious.

** JerkWithAHeartOfGold: He genuinely and wholly loves his family, and when he's able to keep his ego in check he's a nice guy.
* KarmaHoudini: Out of all the cast, he seems to learn his lesson the least, though he only gets his comeuppance in episodes where his selfishness has serious consequences.

* ButtMonkey: He never really gets the respect he deserves. The President sees him as nothing more than "the help", nearly all jokes are aimed at him (especially in "You Posted What?!"), and he's also getting harassed by Perry.

** When Krane tells him to use his Triton App update to destroy Adam, Bree and Chase, Douglas refuses and explains that destroying the Lab Rats was never part of his plan, only to be told off by Krane. Despite later dialogue stating he tried to kill the Lab Rats 522 times, Douglas repeatedly emphasizes that he had no intentions of hurting Adam, Bree and Chase even at his most evil.

* FauxAffablyEvil: A straight example in his villain days: Always cheerful and friendly, but underneath it all was cold blooded ruthlessness. Case in point, him suggesting he, Adam, Bree and Chase plan family game nights while he's working to enslave them. He switches to AffablyEvil in Season 3, and the "evil" part is gone (mostly) after "Sink or Swim".

* GreenEyedMonster: He is envious of his older brother Donald, and it's implied to be at least partially responsible for him turning evil. He overcomes it after his HeelFaceTurn, though he still slips into this every now and then.

* EvenEvilHasLovedOnes: He does genuinely care for Donald if nothing else. However, this seems to have ended in "Human Eddy", because he called Donald a has-been, and that was where Donald drew the line.

* TokenEvilTeammate

->'''Played by:''' Ping Wu

->'''Played by:''' Booboo Stewart (Roman), Ryan Potter (Riker)

->'''Played by:''' Eric Steinberg

* ActionSurvivor: A given when your living with the most biologically advanced humans on the planet. In addition, Leo has survived a lot of things that almost killed him. This is deconstructed in You Posted What?!, where S-1 made a beam collapse on Leo and destroyed his arm. Had the fire department not acted quickly, Leo would have died of blood loss. It's also lampshaded in Forbidden Hero, when the Lab Rats joke about Leo nearly dying on virtually every mission.

[[folder:Daniel Davenport]]
->'''Played by:''' Pearce Joza

* CainAndAbel: Abel to his android brother Marcus' Cain, which became evident in ''The Vanishing''.
* EasilyForgiven: Daniel thought that Douglas didn't want him to come to the island, but forgives him after a talk with Leo.
* EleventhHourRanger: Introduced in ''And Then There Were Four'' as the fourth Davenport sibling, and joins the main cast in the finale against Marcus and Giselle.
* LongLostRelative: Daniel is the fourth Davenport sibling. He was a baby when Donald rescued the first three kids from Douglas, but Douglas had to put him up for adoption because he couldn't raise him while on the run; Daniel only learned who his father was after he turned thirteen.
* PowerCopying: Daniel can replicate bionic abilities from humans ''and'' androids. However, the next set he duplicates will delete the previous set he copied.
* ReplacementGoldfish: Marcus sees him as such, which cements his decision to betray Douglas.
* StoryBreakerPower: Daniel's PowerCopying ability proved to be a story breaker because it means he will be as powerful as the next bionic person he comes in contact with. Since Marcus was the most powerful, Daniel could copy ''all'' his abilities, and [[HoistByHisOwnPetard turn them against him]] in minutes.
* YoungestChildWins: Daniel was the only Davenport sibling with a bionic operating system compatible with an upgrade Donald created, even though Daniel was created before Krane's bionic soldiers (their bionic operating system is the latest compared to the Lab Rats). This gets solved when the original three Lab Rats' chips get destroyed, but end up replaced with a compatible operating system.

[[folder:Eddy]]
->'''Voiced by:''' Creator/WillForte
[[quoteright:291:https://static.tvtropes.org/pmwiki/pub/images/eddy.png]]

* AIIsACrapshoot: Surprisingly averted. Eddy is a pain in the butt but for the most part glitch-free ([[TheMole or is he, really?]]), while the AI in Davenport's car in ''Speed Trapped'' only went awry because of Marcus. On the other hand, he's not always as helpful as people expect.
* DeadpanSnarker: Contantly, especially towards Tasha.
* EvenEvilHasLovedOnes: He does genuinely care for Donald if nothing else. However, this seems to have ended in "Human Eddy", because he called Donald a has-been, and that was where Donald drew the line.
* EvilVersusEvil: More like {{Jerkass}} vs. {{Jerkass}} with Perry, but in the main characters' eyes, they're both despicable. In "Human Eddy", the two duke it out because there's only room for one of them.
* FakeGuestStar: The only reason Will Forte isn't in the opening credits is because he only provides his voice. He does get a chance to play him on screen when Donald makes a android body for him.
* FeelNoPain: After Perry restore his original personalty when he's in his new android body. He states he can't feel any pain so any damage they inflict on him won't work...least until Perry blasts him to pieces with a energy rifle.
* HateSink: Possibly the biggest in the series. He's a massive {{Jerkass}} who's hated by practically everyone that meets him and is almost always antagonistic towards the main cast. Unlike characters like [[JerkWithAHeartOfGold Donald, Principal Perry, or even Douglas]], Eddy constantly subverts any chance at improving himself and only gets worse as time goes on.
* {{Jerkass}}: Exaggerated. Eddy is constantly rude to everyone except Donald (and even then, that might just be because Donald created him and can effectively kill him with a push of a button]]. He's even worse when he's got an android body, because that allows him to be capable of ''physically'' harming someone. Apparently, he's so much a jerk that he makes Perry more tolerable.
* JerkWithAHeartOfJerk: He only claimed to help Leo save the Lab Rats just to annoy him afterwards.
* GrandTheftMe: Thanks to a flawed pill Leo created, Eddy ends up in Tasha's body, and does everything he can to ruin her life, not to mention numerous attempts to HURT her.
* MissionControlIsOffItsMeds
* TheSnarkKnight
* TokenEvilTeammate
* TookALevelInKindness: Temporarily. when Donald makes a body for him in the 4th season. He re-writes Eddy's personality to be kinder and more helpful. Perry, however, found this annoying and re-wired him back to his old personality, not realizing that doing this to him when he's in a human body causes a whole heap of trouble.
* UsedToBeASweetKid: In "Scramble the Orbs", Chase used an early version of Eddy's programming to sell as a personal assistant. This version was polite and helpful, a far cry from the unhelpful {{Jerkass}} he eventually became.
[[/folder]]

[[folder:Janelle]]
->'''Played by:''' Madison Pettis

* AmbiguouslyBrown
* ButtMonkey: Almost every episode she's in consists of her almost getting killed because of Leo.
* DeadpanSnarker
* {{Jerkass}}: Leo admits that sometimes she's mean.
* OfficialCouple: She and Leo are dating, as revealed in ''One of Us''.
* ShipTease: With Leo.
[[/folder]]

[[folder:Caitlin]]
->'''Played by:''' Michaela Carrozzo

* AmbiguousDisorder: It's regularly implied that Caitlin suffers from some sort of disorder showing very poor social skills, low intelligence but great creativity (especially with dominoes) and is extremely eccentric, exactly what however is unspecified.
* CompetitionFreak: When it comes to Domino competitions, Caitlin takes these to the point that she only cares about annihilating the other opponents.
* DramaQueen: She almost always complains about her boyfriend breakup troubles.
* TookALevelInJerkass: Starting from ''Llama Drama'', Caitlin has been quite a jerk towards Bree, such as working her like a dog in the Domino competition and not allowing her breaks, getting Bree to work with her at Tech Town so that she doesn't get the bad jobs anymore, etc.
[[/folder]]

[[folder:Douglas Davenport]]
->'''Played by:''' Jeremy Kent Jackson

* AntiHero: He certainly isn't the most moral fellow even now, but is on the good side regardless.
* AntiVillain: In early season 3, due to Krane being EvilerThanThou.
* AffablyEvil: Even at his most villainous, he was geniunely a carefree and jovial guy. He even suggested that the Lab Rats could work for him while still spending family nights together to show that he loves them in his own way.
* AbusiveParents: It's implied that his parents always ignored him over Donald. Played with in regards to the Lab Rats and Marcus; he does not remember their birthdays and wanted to use them to commit crimes, but he also has moments that show he does care for them, especially after his HeelFaceTurn.
* AfraidOfNeedles: in a throwaway gag, he reveals that he kicked out of med school because he kept screaming every time he saw needles. Oddly enough, this did not seem to be a problem when he cobbled together a harpoon that has a needle.
* AxCrazy: Before his HeelFaceTurn.
* AlliterativeName: '''D'''ouglas '''D'''avenport.
* AmbiguouslyBi: He dated Giselle in college, and there are tons of references to Douglas' and Krane's relationship being like that of a married couple, many of which come from Douglas himself.
-->'''Douglas''': Kids, this is my partner, Victor Krane.
-->'''Adam''': Wait, so now we have three dads?
* AmbiguouslyEvil: He gets ''more'' ambiguous with each appearance after "Bionic Showdown". When he was officially introduced, his agenda was hinted to involve renting out bionic humans to dictators and terrorists, and enslaving Adam, Bree, and Chase for his own evil purposes. Then when discussed in "Avalanche", Chase wondered if Douglas was going to build some bombs, take over a tiny country, and steal money from old ladies. Douglas responds that he ''could'' do those things (albeit not in that order), but then says he just wants to get back at his brother and beat him at something. In his next few appearances, everything he does is done just to spite Donald, including blowing up the lab and stealing all of his money. Finally, in "Which Father Knows Best?", Douglas learns Bree smashed her chip, and that Donald can't fix it. At first he sees it as another thing he could rub in his brother's face, but Leo reminds him that there are more important things than winning against his brother, which leads into his HeelFaceTurn.
* AnnoyingYoungerSibling: Turned evil. He eventually lets go of this trait.
* ArchnemesisDad: To Adam, Bree, and Chase, although they didn't know it prior to "Bionic Showdown".
* BadassBookworm: He's just as good a fighter (and a much more brutal one) as his brother and is more intelligent.
* BadassBoast:
** "Do you want me to blow up the lab again? I'm good at it."
** "Guess I just have to be the bigger man!"
* BadassNormal: Even without any powers, he went up against Krane, who was the most powerful character at the time, and came close to defeating him.
* ByronicHero: He still doesn't have any morals, but he is on the good side.
* BewareTheSillyOnes: He has a comedic side, but he used to be a cold blooded super villain and the most dangerous force the Rats faced until Krane came along. Even now, if you hurt his family he ''will'' make it bite you in the arse.
* BigBadDuumvirate: Has formed one with Victor Krane ever since he got kicked out of Davenport Industries, but it wasn't apparent until the beginning of Season 3. However Krane goes completely insane, betrays him and tries to kill him. It's later revealed they weren't as thick as thieves either, and that Krane kept many secrets from him.
* BigBadWannabe: He's reduced to this as Krane goes increasingly homicidal and mad with power, resulting in Douglas pulling a HeelFaceTurn.
* BigDamnHeroes: When he saved the Lab Rats from Krane.
* BelligerentSexualTension: Perry's dragging him into this.
* ButtMonkey: He never really gets the respect he deserves. The President sees him as nothing more than "the help", nearly all jokes are aimed at him (especially in "You Posted What?!"), and he's also getting harassed by Perry.
* CainAndAbel: The Cain to Donald's Abel. This is explored a little further in "Brother Battle", and it's revealed that they always tried to beat each other up.
* CharacterDevelopment: Douglas started out as a vengeance-driven megalomaniac obsessed with getting back at Donald. However, "Avalanche" shows that Donald had partially driven him into this, and he softens a little after teaming up with the Lab Rats to fight Krane. Leo convinces him that it isn't that important to get the upper hand over Donald, and Douglas slowly gains the family's trust.
* ChekhovsGunman: Douglas is alluded to in "Exoskeleton vs. Grandma", but supposedly as part of a lie cooked up by Donald to come up with an explanation for Adam, Bree and Chase. Eventually, Douglas makes his appearance, and everything Donald said to Leo's grandma regarding him turned out to be accurate (except for him falling into a volcano).
* ChekhovsSkill: Remember how Douglas hacked into Davenport Industries and liquidated all their assets? He uses his hacking skills to create a virus to fry all of Giselle's servers.
* ChronicBackstabbingDisorder: Inverted. Two of Douglas's partners betray him: Victor Krane attempts to kill him when he was done with him, and Giselle uses a movie as a front to eliminate the Lab Rats.
* ChuckCunninghamSyndrome[=/=]WhatHappenedToTheMouse: His absence during the Bionic Island arc is mostly justified, as his knowledge of Krane and bionics would be a StoryBreakerPower and would've resulted in most of the problems occurring in that arc being solved too easily. He is mentioned in "Bionic Rebellion" and returns in "Under Siege".
* DatingCatwoman: Perry tries this with him. He doesn't love her back, mostly because she's about in her late 50's. However, he doesn't want to hurt her feelings, so he plays along, but clearly doesn't enjoy it. One has to wonder why he doesn't just use a cybermask to hide himself from her.
* DeliberatelyBadExample: Douglas' main purpose was to offset Donald's unpopular traits, showing that while Donald can be a jerk to everyone, he means a lot to the kids, whereas Douglas was ruthless to the point that he would use bionic humans as weapons. After his HeelFaceTurn, he's supposed to serve as this trope in a different manner by almost always breaking the rules and by making decisions that even Donald knows are legitimately reckless and probably illegal. This doesn't work because Donald's stubbornness and ego-driven jerkassery ends up looking ''more'' disreputable, causing Douglas's actions to be glossed over, which is ironic considering Douglas has a similar mentality to his brother.
* DiabolicalMastermind: Able to create bionic humans and high tech gear. Unfortunately, it fell in the wrong hands.
* DidntThinkThisThrough: Douglas didn't think Leo needed a capsule because only his arm is bionic. Leo's arm acts up in "Under Siege" because it hadn't been calibrated to his nervous system yet.
* EnemyMine: He becomes fed up with Krane after being betrayed by him and teams up with the Lab Rats in "Taken".
** This happens again in "Which Father Knows Best?", where Leo had to find Douglas because he was the only one who could restore Bree's bionics.

* EvenEvilHasStandards:
** When Krane tells him to use his Triton App update to destroy Adam, Bree and Chase, Douglas refuses and explains that destroying the Lab Rats was never part of his plan, only to be told off by Krane. Despite later dialogue stating he tried to kill the Lab Rats 522 times, Douglas repeatedly emphasizes that he had no intentions of hurting Adam, Bree and Chase even at his most evil.
** It's later revealed in "Rise of The Secret Soldiers" that when he designed their chips, he installed a protocol that will allow them to fuse their bionics, but he didn't tell them because the results would be catastrophic and it was only to be used as a last resort. It's clear now that he never wanted to kill them in the first place.
** Krane also wanted to put a doomsday virus in the Triton App that would activate in the event of his death. Douglas refused, but Krane added it anyways behind his back.
** He made another kid, Daniel, who was a baby when Donald took the original three Lab Rats. As much as he wanted to use Adam, Bree and Chase as weapons, he couldn't raise Daniel while on the run, and chose to put him up for adoption to keep him away from all his chaos.
* EvenEvilHasLovedOnes: He geniunely loved the Lab Rats, even in his villain days. He also loves his dog, Otis. Even after he discovers Krane turned Otis into his personal henchman, Douglas still couldn't hurt him.
* [[EvilUncle Evil Step-Uncle]]: To Leo, which the latter jokingly lampshades in "Face Off". After his HeelFaceTurn, it's an honorary title.
* ExactWords: Donald gets angry at him for upsetting the balance of power on the team, because he gave Chase a new ability. Douglas "restores balance" by giving ''Adam'' a new ability.
* FriendlyEnemy: To Donald and the Lab Rats back in his villain days. He acted friendly towards them, even while fighting them. Leo, however, was the bane of his existence because he found out about his plan before everyone did. He only first approached Leo as a friend in "Taken".
* FakingTheDead: Apparently, he's really good at doing this. He was presumed dead prior to the start of the series.
* FauxAffablyEvil: A straight example in his villain days: Always cheerful and friendly, but underneath it all was cold blooded ruthlessness. Case in point, him suggesting he, Adam, Bree and Chase plan family game nights while he's working to enslave them. He switches to AffablyEvil in Season 3, and the "evil" part is gone (mostly) after "Sink or Swim".
* ForgivenButNotForgotten: While his family has accepted him, the things he did while he was evil are almost always brought up. Douglas still has a long way to go in earning everyone's trust, and he does so by making himself useful.
* GiveHimANormalLife: He put Daniel up for adoption for this reason.
* GoodIsNotSoft: He is a nice guy, but [[DoNotGoGentle don't expect him to go easy on a villain]]. ''Especially'' if they hurt his kids.

* GreenEyedMonster: He is envious of his older brother Donald, and it's implied to be at least partially responsible for him turning evil. He overcomes it after his HeelFaceTurn, though he still slips into this every now and then.

* HeelFaceTurn: After Krane decides he wants to kill Adam, Bree and Chase, Douglas begins to have second thoughts. As Krane gets more and more insane he turns on him to save his kids' lives, and truly redeems himself when he builds Bree a new chip and agrees to work with Donald to save her when it malfunctions. After some prompting Donald agrees to give him a second chance.
* HeroicComedicSociopath: He still admits that he has gone against the law, like it's no big deal. Usually, his response is to resort to the violent option if he's in a tight spot. In "You Posted What?", he suggests that he could blow up the lab just to get rid of all the agents looking for them; however, the intention was more to get away than to kill them, seeing as he had panicked.
* HumanPopsicle: Gets frozen solid by his brother's new freeze ray after Chase tricked him.
* InsufferableGenius: Like his brother and son.
* ItsAllAboutMe: After his CharacterDevelopment, he gets rid of this mentality and becomes more selfless and caring.
* JustAMachine: He's pretty indifferent, almost amused by the fact that his son is going to die before turning 16 because Marcus is 'just an android'. This did NOT bode well for him when Marcus came back. However, dialogue during ''Bionic Action Hero'' implies he does miss Marcus.
* KnightOfCerebus: He's much darker than most of the show's other villains, as well as most Disney villains at the time. Although still portrayed as somewhat light hearted, he is a realistic mad scientist who's engaged in experimenting on children, has no problems committing outright murder, and before redeeming himself his long term goal appeared to be a mixture of brainwashing, slavery and ChildSoldiers.
** Even after his HeelFaceTurn, he still casually and (mostly) shamelessly admits to having committed countless crimes. However, that's closer to ComedicSociopathy.
* LackOfEmpathy: Douglas has trouble grasping the concept of empathy. Back when he was a villain this made him incredibly dangerous, and even after his HeelFaceTurn he still seems to have trouble with it outside his own family, describing potential horrific events or even deaths in a way that always relates to himself. However, he does have a sense of empathy and compassion despite that: it's clear he feels guilt for his past actions, and he turned on Krane when the other man went too far.
* LaughablyEvil: Sure, he's threatening...but he's also just as crazy as Donald is. He even posted hilarious updates that Adam has been reading. His jokes however, are [[SoUnfunnyItsFunny really terrible]].
* TheLancer: He's now Donald's right hand man, and takes over the Bionic Academy when he's not there. Of course, if something goes wrong, he's the one who gets held responsible.
* LargeHam: Probably the biggest ham on the show. Especially when name rivaling with his brother, Donald, or in this case, "Donny!" In fact, the first thing he did when he came on screen was yell "I'M BAAAAACK!".
* LukeIAmYourFather: He's the one who created Adam, Bree, and Chase. This means (almost) everything Donald said in ''Exoskeleton vs. Grandma'' was accurate all along.
* ManlyManAndSensitiveGuy: The Manly Man to Leo or Donald's Sensitive Guy.
* MadScientist: An interesting example. Rather than being a stereotypical mad scientist. Douglas is instead presented as someone who is both close to realistically dangerously insane and a super-genius scientist. Of course, there's also the fact that he has trouble making an invention that won't end with someone getting hurt.
** In "Spider Island" he reveals that before he went into technology he tried to bring extinct species of animals back from the dead. He never cracked it, so him claiming to have reanimated his brother's dead gerbil might not have been a stretch.
* TheManBehindTheMan: Douglas had a strong influence on every bionic-related incident that takes place in the series, as it was his idea to implant bionics into human beings. He gave Krane bionic abilities as well as technology and research, which led Krane to become a power-hungry, psychopathic mastermind and genetically engineer his own bionic soldiers. Douglas also gave his ex-girlfriend Giselle his research on androids.
* MrFixit: In the academy, he's the guy responsible for all their tech needs, supplies, etc.
* MrViceGuy: Despite his InsufferableGenius traits and somewhat psychopathic behaviour, he's otherwise a pretty nice guy.
* MorallyAmbiguousDoctorate: He never got one, because he failed.
* OmnidisciplinaryScientist: Just like his brother, Douglas is a specialist in bionics, engineering, genetics and a whole lot more.
* OnlySaneMan: He shares this trope with Chase. Unlike Donald, Douglas has matured after his HeelFaceTurn, though he doesn't always play by the rules.
* PapaWolf: Say what you will about him, but the man loves his kids. He turns on Krane after the latter expresses wanting to destroy Adam, Bree and Chase, and offers his life to protect Daniel from Marcus (albeit as part of a trick, but the fact he didn't offer Donald up instead shows how serious he was being).
* PetTheDog: Quite literally. The one being he actually cared for after being kicked out from Davenport Industries was his pet dog, Otis. Chase and co. are surprised that a bad guy like Douglas actually had someone he cared for.
* PunchClockVillain: Even when he was a villain, Douglas was still an all-around fun guy. He even shared a few jokes with Donald and the Lab Rats. This goes to the point where he suggested that he would plan family game night to show them that he can still be their dad, while enslaving them.
* {{Revenge}}: Formerly motivated by getting revenge on Donald for doing nothing but overshadow and drag Douglas down his whole life, which screwed him up emotionally. He lets go of this after his HeelFaceTurn, not that Donald sees himself as responsible for any of it in the first place.
* ShadowArchetype: Formerly to his brother Donald. Donald is an arrogant jerk who doesn't always treat Leo or the Lab Rats with proper respect, but he at least tries to keep it in check. Douglas on the other hand is far worse in regards to his arrogance. However, it was Donald who screwed Douglas' life up in the past and is partially responsible for his behavior, but he doesn't take responsibility for it. After Douglas' HeelFaceTurn, Donald instead starts to become this to him. Douglas is portrayed as less responsible, but is more tolerant of his children's mistakes and can relate to them better than Donald, who just has way too much pride to notice how they feel. Douglas also isn't afraid to call Donald out when he treats them poorly.
* TakeMeInstead: When he sees Marcus torturing Daniel, Douglas offers his life up instead, as he is the one Marcus hates the most. Subverted in that it's a trick to get Daniel to copy Marcus's abilities. Even so, the fact that Douglas offered himself as the bait and not Donald shows Douglas was willing to take responsibility and pay for what he did to Marcus.
* TragicVillain: The reason he turned evil was that Donald (and, implicitly, their parents) mistreated him for so long that he became obsessed with getting the upper hand until Leo convinces him that family is more important than {{Revenge}}.
* TheWorfEffect: Though he's very good at keeping up against Krane and other bionic villains, he sometimes falls into this, mostly to have the Lab Rats save the day.
* ThrowTheDogABone: Donald doesn't trust Douglas to be a part of Davenport Industries again, but he does let Douglas take care of the Academy when he can't be around.
* TrulySingleParent: Douglas never married, and he created Adam, Bree, Chase and Daniel via genetic engineering.
* VillainRespect: To Donald and the Lab Rats when he was a villain.
* WeCanRuleTogether: Tries this with Chase. It backfires horribly.
* WouldHurtAChild: Not his own, but Leo was fair game because he kept interfering with his plans.
* UncertainDoom: In the season finale of ''Elite Force'' (which became its series finale after its cancellation) he is [[spoiler:attacked and left for dead by Reese.]] His actor later confirmed that Douglas was alive, but it remains unknown whether he retained any lasting damage or not.

!Villains
!!Introduced in ''Lab Rats''
[[folder:Trent]]
->'''Played by:''' Creator/EddiePerino

* ArchEnemy: To Leo
* BookDumb: He isn't the brightest guy in school.
* ChuckCunninghamSyndrome: He effectively vanished after "Scramble The Orbs".
* TheDragon: To Principal Perry.
** DragonAscendant: Briefly in ''Not So Smart Phone''
* ForTheEvulz: The main reason he torments Leo, much like Principal Perry.
* PsychopathicManchild: As of "Trent Gets Schooled", he is 18, legally an adult. Yet even after graduating and getting a job as the school's new gym teacher, he still acts like an immature bully.
* KickTheDog: Steals Leo's clothes and reducing him to a towel.

* KickTheSonOfABitch: Although not quite a villain, he was big meanie to Tasha. When it looks like Eddy is destroyed along with the lab, Tasha feels Eddy got what he truly deserved for being mean to her all these years.
** Perry blasts Eddy's new synthetic human body into pieces. To be fair, he HAD that coming.

* KickTheSonOfABitch: While it eventually gets out of hand, it's hard to argue that his initial treatment of Douglas wasn't somewhat deserved.

* TheDogBitesBack: Chase finally makes a name for himself in "The Jet Wing" by shoving Adam to the floor [[KarmaHoudiniWarranty as long-awaited punishment]] for punching him one too many times, much to [[WhatTheHellHero everyone's shock and Adam's dismay]]

* KarmaHoudini: Out of all the cast, he seems to learn his lesson the least, though he only gets comeuppance in episodes where his selfishness has serious consequences.

* BadassBaritone: As Spike, his voice is much deeper.

* BadassBaritone: Very much so.

* BadassBaritone: in ''Bionic Showdown'', Adam demonstrates this when he goes into ExplosiveOverclocking and activates his personal KamehameHadoken attack.

* {{Envy}}: Towards his older brother Donald, and it's implied to be at least partially responsible for him turning evil. He overcomes it after his HeelFaceTurn, though he still slips into this every now and then.

* WhipItGood: In her second appearance she's seen using an electric whip as her primary weapon. It's sharp and powerful enough to smash cameras and cut through steel.

* AuthorityEqualsAsskicking: Perry is a principal, but is the toughest authority figure in school, so it's not a good idea to mess with her. She was the only person in the school capable of taking down Chase when he was in Spike mode, and she was once a female Mexican wrestler.

* [[FatBastard Fat Bitch]]

* TheHeavy

* KickTheDog: Now that she knows the Lab Rats' secret, she stepped up her game even further by making them her bionic servants.

* PetTheDog: She actually cared enough to send Leo and Douglas to the hospital after Krane and S-1's attack. At the end of ''You Posted What?!'', she admits she does care about Leo a little bit. Sure, if a real villain like Krane threatens Leo, of course she wouldn't let her favorite student to torment die.
** Then in ''Space Colony'', she constantly entertains the idea of the Lab Rats dying, but wished Adam good luck and claims he was always her favorite. When it seemed Adam died, Perry was for once, ''genuinely'' saddened at this, showing that she ''really'' meant what she said about Adam being her favorite. She also comforted Brew when they thought Adam was dead and hugged Chase upon learning Adam had survived.