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Voiced by: Ewan McGregorA humble and idealistic young robot from Rivet Town, Rodney is an aspiring inventor who idolizes Bigweld, having grown up watching his show and taking to heart Bigweld's philosophies in hopes of helping to improve the world through his inventions. Coming to Robot City
- Adorkable: He is incredibly charming both in terms of looks and personality. His large, expressive eyes and his Wide-Eyed Idealist nature - he's just an all-around cutie.
- And Show It to You: During the repair montage, he takes out a robot's heart, which is still beating and attached by a wire. Fender faints at the sight.
- Are You Pondering What I'm Pondering?: When he and Bigweld try to come up with a plan to stop the super-sweepers, Rodney delivers the punchline of this trope after Bigweld asks him by coming up with an insane idea that is not in any way what Bigweld had in mind. It still works, though.
- Ascended Fanboy: His ultimate goal is to become an inventor who works for Bigweld, which he ultimately achieves by the end of the movie.
- Birds of a Feather: A reason he and Cappy develop appreciation for each other is that they, according to Word of God, both had similar pasts, having to do with spare parts and holding a strong belief in Bigweld's motto.
- Blue Is Heroic: His main color scheme is light blue.
- Black-Tie Infiltration: He and Fender infiltrate the Bigweld Ball by pretending to by Count Roderick von Broken Zipper (formerly Count Velcro) and his valet, respectively.
- Character Development: Rodney goes from being a mere fanboy of Bigweld's to becoming his idol's right-hand man and eventual successor, and his naivety to the ways of Robot City decreases over the course of the film.
- Chick Magnet: He attracts the attention of two females, and thus becomes the Archie in the Betty and Veronica love triangle.
- Crossdresser: He briefly becomes this during his adolescence, when he has to wear spare parts from his cousin Veronica. He gets rid of it after his graduation.
- Determinator: It comes with being an aspiring inventor. Rodney almost never gives up, no matter how many obstacles he has to face.
- Fanboy: Rodney greatly admired Bigweld ever since he was little.
- Gadgeteer Genius: Rodney is this in spades, to emulate his idol, Bigweld.
- Getting Crap Past the Radar: He has this great moment when he's about to repair the outmodes:Wait! (takes out his spanners) Who wants to get fixed?(everyone cheers, except for a dog, who whimpers)
- The Hero: He is the main character of the film, and ultimately the one who saves the entirety of Robot City from having Ratchet and Madame Gasket dominate them.
- Heterosexual Life-Partners: With Wonderbot and later Fender.
- I Just Want to Be Special: His whole motive for wanting to go to Robot City in pursuit of his dream of becoming an inventor.
- It's Personal: While it was his dream to become an inventor that pushed him to investigating the change in Bigweld industries, things become even more personal when his father is in needs of new parts.
- Mr. Fixit: He is good at keeping outmodes functional even without new parts.
- Nice Guy: Rodney is a genuinely noble, well-intentioned robot who wants to look out for other Outmodes.
- Nothing Exciting Ever Happens Here: The reason he goes to Robot City is that he feels he'll never make a name of himself in his small hometown of Rivet Town.
- Official Couple: He gets together with Cappy.
- The Protagonist: Robots follows his adventures on trying to become an inventor like his childhood idol.
- Pursue the Dream Job: He shows an interest in inventing ever since he first learns about who Bigweld is and what he stands for.
- Reality Ensues:
- He learns from Tim about the new policies of Bigweld Industries and how they don't hire inventors anymore.
- And at the end of the film, he gives his father an instrument in order for him to achieve his dream as a musician. It's then shown a few seconds later that he can't play it. Fortunately, the town steps in to salvage his performance for the ending.
- Red Oni, Blue Oni: The level-headed and introverted Blue to Fender's outgoing and impulsive Red, both figuratively and literally.
- Retroactive Wish: After he complains about the Rusties not doing anything to find Bigweld, he states that there should be an angry mob outside - and at that same moment, an angry mob indeed appears running past the house.
- Savvy Guy, Energetic Girl: The Savvy Guy to Piper's Energetic Girl; he's a coolheaded and even-tempered introvert, while she is a high-spirited and perky Genki Girl whose feelings for him are not returned.
- Silly Robot, Idealism Is For Kids!: Tim openly mocks him for his passion for inventing and working with Bigweld.Rodney: Listen, I'll be back, and I'm gonna get to the bottom of this!
Tim: When you pick a lost cause, you really commit! Where do they make dreamers like you? GET LOST, FREAK!
- Slippery Skid: He has an encounter with Fender trying to nick his foot, and they play tug-of-war for it while trying to keep their balance on a river of ball bearings. Fender eventually loses his balance and falls over, literally losing his head in the process.
- Straight Man: To Fender's Plucky Comic Relief.
- Strong Girl, Smart Guy: The Smart Guy (comes up with inventions to help make the robot world a better place) to Cappy's Strong Girl (goes against Ratchet and the rest of her colleagues to stick up for the outmodes).
- True Companions: Wonderbot is with him almost anywhere he goes.
- Wide-Eyed Idealist: Seriously, look at how adorkably idealistic he looks with that face of his.
- Upbringing Makes the Hero: Everything Rodney became and accomplished was all thanks to his father's upbringing.
- "Yes"/"No" Answer Interpretation: He has this when he and the damaged Bigweld are escaping Ratchet.Rodney: Mr. Bigweld, are you okay?
Bigweld: (loopy) Im the prettiest girl at the Harvest Moon Ball!
Rodney: ILL TAKE THAT AS A NO!
Voiced by: Mel Brooks
- Arc Words: His two catchphrases, "You can shine no matter what you're made of!" and "See a need, fill a need!", especially the former, are what push the movie forward and the overall morals.
- Are You Pondering What I'm Pondering?: Said almost word-for-word ("thinking" is substituted for "pondering") when he and Rodney are about to take out the super-sweepers. Rodney says he is, but it is soon revealed that the insane plan he comes up with is not what Bigweld was thinking at all.
- Big Good: He is the one who Rodney and his friends follow in order to take back Bigweld Industries from Ratchet.
- Catchphrase: "You can shine no matter what you're made of!"
- Broken Pedestal: Rodney's faith in him takes a huge hit towards the climax of the film after seeing what Bigweld has become in the intervening years between Rodney's childhood and their meeting. Once He's Back, becomes a Rebuilt Pedestal.
- Cool Old Guy: What's not cool about an old robot who invents things and likes to play around with dominoes?
- Chubby Chaser: He's pretty attracted to Aunt Fanny (mostly thanks to her trunk).
- Gadgeteer Genius: He is the very reason that Rodney decided to follow in his footsteps and become an inventor.
- Gratuitous Yiddish: At the end of the film, he thanks Rodney for "getting [him] off [his] big titanium tuckus." Of course, if you have Mel Brooks playing a character, chances are he'll slip at least one Yiddish word in there.
- He's Back: Despite what Ratchet did to him earlier, Bigweld eventually decides to come out of hiding and help Rodney and his friends take on him. Naturally, his return to Bigweld Industries is met with plenty of enthusiasm.
- Heroic BSoD: He has been stuck in a major one since Ratchet took over the industry. It isn't until Rodney and Cappy find him that he's finally snapped out of it.
- Honest Corporate Executive: His job involves putting helping others over how his company does financially. Ratchet, however, convinces him that way doesn't work so that he can take over.
- Insult Backfire: When he is taken hostage by Madame Gasket, he calls her a "sick, twisted evil robot", only for the flattered Gasket to respond with "I try".
- Mr. Alt Disney: A creative genius with a jovial and friendly television persona whose legacy is tarnished by successors? It could only be Uncle Walt.
- No-Nonsense Nemesis: Bigweld is this to Ratchet when he comes out of hiding - he confronts him promptly in the office and fires him on the spot. Unfortunately, Ratchet manages to knock him out with a telephone.
- One-Wheeled Wonder: His entire body is a large round wheel.
- Reasonable Authority Figure: He helps Rodney achieve his dreams and manages to successfully take back his company from Ratchet.
- Ship Tease: With Aunt Fanny. It's assumed that they are a couple by the end of the film, seeing that they dance together.
- Shipper on Deck: He is apparently all for Rodney x Cappy.Bigweld: (to Cappy) Hey, you know your boyfriend here is a genius.Rodney: What?Cappy: Oh, he's not my boy- he is?Rodney: (to Cappy) I am?
- Silly Rabbit, Idealism Is for Kids!: Ratchet treats his idea of helping others like a complete lost cause, which is what forces him into hiding, effectively making Ratchet the new head of Bigweld Industries.
- Took a Level in Idealism: Having lost his spark, meeting Rodney is what makes him get back on his feet and finally confront Ratchet.
Voiced by: Robin Williams
- And Show It to You: He is on the receiving end of this trope - he faints after Rodney takes out a robot's heart and shows it is still beating.
- Attack! Attack... Retreat! Retreat!: When he gets kidnapped by a sweeper, he repeatedly pounds on the door in a vain attempt to open it, but once it does open and reveals the chop shop outside, he chickens out."Help! Open the door! OPEN THE DOOR! (the door opens; the chop shop is outside) WHOA! Close the door! CLOSE THE DOOR!"
- Big Anime Eyes: He invokes this on Rodney, when he is taking photos of Rodney to try to scam him."Gimme those eyes, big eyes, big eyes, big eyes! Gimme big anime eyes!"
- Big Brother Instinct: For all his foolishness, he's very protective over his sister.
- Black-Tie Infiltration: He and Rodney infiltrate the Bigweld Ball by disguising themselves. Fender disguises himself as the valet of Count Roderick von Broken Zipper, whom Rodney disguises himself as.
- Cranium Chase: After accidentally getting his head knocked off by Rodney, Fender ends up doing this.
- Crossdresser: He becomes this after his incident in the chop shop.
- Deadpan Snarker: He has quite a few good snarks when his head detaches from his body.
- Demoted to Extra: In the Playstation video game, he is pretty much a minor character and doesn't have a single line along with that.
- Easy Sex Change: Downplayed, as the only part of his body that becomes completely feminine is his pair of legs.
- Foolish Sibling, Responsible Sibling: He and Piper alternate between both roles. Fender, while being prone to making selfish and reckless decisions, does try to keep his sister safe. Piper, while being a rambunctious and overly ambitious tomboy, does make more sensible decisions than her brother and is openly nicer than him.
- Gender Bender: Fender ends up putting on a pair of female robot legs to replace his own after losing them in the Chop Shop.
- Getting Crap Past the Radar: He has this campy moment with Rodney:"Come on, you can bunk with me. We'll ignore the gossip."
- Heroes Want Redheads: Loretta Geargrinder, the chick he falls for, has red hair.
- Heterosexual Life-Partners: He eventually becomes this with Rodney.
- Innocently Insensitive: He claims he didn't know Rodney was at the end of the foot he found.
- Jerk with a Heart of Gold: Fender may make impulsive decisions sometimes, and his first interaction with Rodney is basically an attempt to scam him, but aside from that, he is pretty friendly and good-hearted, and he accepts Rodney into the Rusties with open arms.
- Kleptomaniac Hero: Has a habit of getting his hands on leftover spare parts."I am not a mugger. I happen to be a scrounger."
- The Lancer: He becomes Rodney's closest ally.
- Lovable Coward: He humorously chickens out over numerous things, like when the pod he and Rodney ride in is about to fall, and of course, his encounter with the chop shop.
- Manchild: "I'm practically a kid!"
- Masculine Girl, Feminine Boy: The Feminine Boy to Piper's Masculine Girl; he's clearly not very action-oriented and is quite awkward compared to his sister. It gets even funnier when he becomes gender-bent after escaping the Chop Shop.
- Motor Mouth: He talks quite a lot faster than many of the other characters, adding to the comedic nature of his character.
- Noodle Incident:Fender (nonchalantly): It (the expressway) used to be a lot worse. They had this giant hammer...
Rodney: (Yelps in panic)
Fender (Looks over shoulder, notices giant hammer barreling down on them, still nonchalant): Oh! They brought it back.
- Non-Action Guy: Especially in contrast to Piper, he's not so much for going out and doing adventurous stuff. At least until the end of the film.
- Official Couple: It's hinted that he and Loretta get together by the end of the film.
- Oh, Crap!: When the Sweeper sends him to the chop shop.
- Plucky Comic Relief: To Rodney's Straight Man.
- Pulling Themselves Together: Fender has a habit of losing parts of himself at the most inopportune times.
- Red Is Heroic: His main color scheme is red.
- Red Oni, Blue Oni: The outgoing and impulsive Red to Rodney's level-headed and introverted Blue, both figuratively and literally.
- But he is the bumbling, cowardly Blue himself to Piper's outspoken, aggressive Red.
- Shout-Out: While he and Rodney are trying to come up with a way to signal each other at the Bigweld Ball, he gets this idea:
- Slippery Skid: He tries to nick Rodney's foot, and he gets into a tug-of-war game with him for it, while trying to keep their balance on a river of ball bearings. Fender eventually loses his balance and falls over, literally losing his head in the process.
- This Is My Name on Foreign: He claims he was called 'Bumper' before he immigrated.
- Took a Level in Badass: In the climax of the film, he becomes very determined to save Rodney and Bigweld from Ratchet and his henchmen, even going as far as attempting to do it. He also proves to be quite competent in the midst of action after all, taking out some of Madame Gasket's minions by dancing to Britney Spears' "Baby, One More Time".
- Ugly Guy, Hot Wife: Well, Ugly Guy, Hot Girlfriend in his case, since he only establishes a relationship with Loretta and doesn't go very far from that.
- Unplanned Crossdressing: While he was trying to escape the chop shop, his legs fell off. He tried carrying on without them until he found some legs that fit him. Said legs are female.
- The Voiceless: He appears in the short Aunt Fanny's Tour of Booty, but does not speak at all there. He is also this in the Playstation video game.
Voiced by: Amanda Bynes
- Action Girl: Showed great examples of this during the climactic Chop Shop battle. In general, she's certainly the more aggressive one compared to her own brother.
- Back-to-Back Badasses: During the Chop Shop battle, she and Cappy both get confronted by some of Gasket's minions, but they are able to take them out easily - they lock their arms together and Piper kicks them away while Cappy spins her.
- Betty and Veronica: The Betty to Cappy's Veronica for Rodney's Archie.
- Beware the Nice Ones: Piper is a very supportive girl with a big heart, but she is still a fierce tomboy who doesn't let anyone take advantage of her, so she's not to be messed with.
- Big Damn Heroes: Piper rallies all of the outmodes to help Rodney and his friends fight Gasket and her forces. Before revealing this to her friends, there's this:Piper: Did I miss the bot-whoopin'?Rodney, Fender, Crank, Lug and Cappy: Uh ... no.Crank: In fact, you're a little bit early.''(The outmodes appear behind Piper and Aunt Fanny, cheering, "Rodney! Rodney! Rodney!")Piper: Then let's get started!
- Clingy Jealous Girl: She shows shades of this when she sees Rodney with Cappy for the first time, additionally saying, "Who the heck is she?" Fortunately, she doesn't express any negative feelings about it later, and seems to have no problem with them dancing with each other at the end of the film.
- Deadpan Snarker: Mostly towards Fender.Fender: We've told you a hundred times, "Don't talk to strange men". Thank you, Manuel.
Piper: I talk to you. Who's stranger than that?
- Dogged Nice Girl: She's sweet towards Rodney, and while he does grow to like her, it's not in a romantic fashion. It's Cappy that he has those feelings for.
- Foolish Sibling, Responsible Sibling: She and Fender alternate between both roles. Piper, while being a rambunctious and overly ambitious tomboy, does make more sensible decisions than her brother and is openly nicer than him. Fender, while being prone to making selfish and reckless decisions, does try to keep his sister safe.
- Genki Girl: A while after Rodney has begun to excel in repairing outmodes, she claims that she gets all "static-y" just thinking about the possibilites of what could happen.
- Hot-Blooded: Perhaps the most so out of any character in the main cast - she is by no means afraid to stand up for herself if you underestimate her, and she has a lot of buttons that get pushed very easily.
- Little Sister Instinct: She's as protective over Fender as he is over her.
- Loony Fan: Eventually is this to Rodney once his popularity among the outmodes rises.
- Masculine Girl, Feminine Boy: The Masculine Girl to Fender's Feminine Boy; she's clearly more likely to jump into the action and has a more passionate spirit to her, in high contrast to her brother's initial awkward cowardice.
- Nice Girl: Besides being a feisty tomboy with a lot of spunk and attitude, Piper is extremely sweet, warmhearted and positive.
- The Not-Love Interest: To Rodney, obviously. It's easy to think from the get-go that she is his love interest, but it turns out to be Cappy later.
- Precocious Crush: Piper has a crush on Rodney, but he's not interested in her.
- Red Oni, Blue Oni: The outspoken, aggressive Red to Fender's bumbling, cowardly Blue.
- Savvy Guy, Energetic Girl: The Energetic Girl to Rodney's Savvy Guy; he's a coolheaded and even-tempered introvert, while she is a high-spirited and perky Genki Girl whose feelings for him are not returned.
- Tagalong Kid: She plays this role once everyone bands together to stop the bad guys. Her friends tend to see her as the The Baby of the Bunch (assuming she is the youngest out of all of them) and try to leave her out of the action during the climax. She proves all of them dead wrong when she rallies up the outmodes Rodney repaired to join them for the final battle.
- Tomboy and Girly Girl: The Tomboy to Cappy's Girly Girl; she's the more brawny and extroverted one of the two and has a more casual and middle-classy appearance.
- Violently Protective Girlfriend: Subverted in that she and Rodney are not boyfriend and girlfriend, but she still has a crush on him and won't let any one harm him.
Voiced by: Drew Carey
- Brilliant, but Lazy: Crank appeared to be this, but thankfully, as the film goes on, he decides to actually try new things without complaining.
- The Cynic: His sense of humor can be summarized as sarcastic and bitter and is usually full of complaints.
- Deadpan Snarker: The most sarcastic and pessimstic member of the main cast. Helps that he's voiced by Drew Carey!
- The Eeyore: Appeared to be this, before his mild Character Development.
- Jerkass Has a Point: After Fender reveals to everyone that Ratchet and Madame Gasket are about to unleash their fleet of super sweepers on the city, Crank suggests that everyone get on the train. Rodney calls them out for all giving up, but then Crank points out that Rodney was indeed the one who got everyone involved in it all.
- Jerk with a Heart of Gold: As negative and grumpy he may be, Crank is still loyal to his friends and will come through for them in the end.
- Meaningful Name: Guess where he got the name "Crank" from?
- Oh, Crap!: Gets this after seeing how many minions Gasket has:Fender: (Scottish accent) We've come to rescue our friends, you evil bag of bolts! And you will be defeated by the very outmodes that you scorn and deface!Crank: Yeah! 'Cause there's seven of us, and only one of you. (hundreds of minions appear behind Gasket) Whoa, whoa ...
- The Smart Guy: Rodney is already a smart guy, but once he and his friends form a group, he is The Leader along with officially being The Hero, so Crank has the Smart Guy mantle. He is, of course, more the pessimistic type. For example:Crank: Hey, you want my advice?Rodney: Sure.Crank: Forget it. Never try, never fail. Those are the words I live by.
- Sour Supporter: At first, he appears to be on Rodney's side only because his friends are, and he himself doesn't have a lot of optimism for him.
- Toilet Humor:"Oh, man. This is my third oil change today. Something's wrong with me!"
- Took a Level in Badass: When Rodney tells everyone that they need to "shine and show them what (they're) really made of", he admits that all he has ever done for so much time is just complain and do nothing. He's tired of it and says he wants to try. Rodney then gives him the first "upgrade", a set of monster truck wheels, and he uses them to take out Gasket's minions.
Voiced by: Harland Williams
- The Big Guy: He's the largest of the main robots and one of the strongest.
- Big Guy, Little Guy: The Big Guy to Diesel's Little Guy.
- Comically Missing the Point:Lug: Hey, Fender! Have you lost weight?
Crank: "Lost weight"?! Look at where you're looking. He's a head, in a basket!
- Dumb Muscle: For all his strength, he's really not that bright.
- Gentle Giant: May be the biggest member of the Rusties, but is actually one of the friendliest among them.
- Heterosexual Life-Partners: With Diesel.
- Its All There In The Manual: His name is never mentioned anywhere in the film's dialogue, only brought up in the credits and tie-in merchandising.
- Nice Guy: One of the friendlier members of the Rusties. When Fender calls Rodney out for knocking his head off, he is the only one to not show any aggressive feelings towards him.
- Stout Strength: Greatly demonstrates this during the climactic Chop Shop battle, when fighting two of Madame Gasket's Mooks.
Voiced by: N/A
- Big Guy, Little Guy: The Little Guy to Lug's Big Guy.
- Cowboy: The bits of junk Rodney gives him before the final battle resemble a cowboy's outfit.
- Flat Character: Diesel has something of a hyperactive side to him, but that's pretty much the only thing he gets in terms of a personality as a result of being unable to speak for most of the film.
- Heterosexual Life-Partners: With Lug.
- I Just Want to Be Normal: All Diesel really wants is to have a voice of his own.
- Kid-Appeal Character: Diesel does display some traits that would be appealing to children, such as...
- Pantomime: Much of his comedy comes from this.
- Suddenly Voiced: Is given a new voice box by Bigweld, which enables him to sing James Brown's "Get Up Offa That Thing".
- The Voiceless: Up until the end of the film.
Voiced by: Jennifer Coolidge
- Ass Kicks You: Seems to do this a lot and usually by complete accident.
- Actual Pacifist: She is not someone who takes kindly to fighting, whether it be verbal or physical.Rodney: Come on, let's fight back!Aunt Fanny: Fighting never solves anything!
- Badass Boast: During the final battle.(referring to her butt) "Say hello to my dimpled friend!"
- Black Comedy: Her farts are so bad are so bad that a robot outside asphyxiates to death, with a chalk outline of the body on the street next morning.
- Cool Old Lady: Aunt Fanny is likely to be in her 50's or 60's, and she does prove to be a pretty awesome gal during the Chop Shop battle.
- Dub Name Change: Her name is changed to "Aunt Fan" in the UK release (see Separated by a Common Language below).
- Fartillery: Inadvertently does this at one point, killing a nearby street-lamp bot.
- Fat Admirer: Aunt Fanny is a big fan of Bigweld, who is even bigger than she is.
- I Was Quite a Looker: When she sees Cappy for the first time, she wistfully muses that she once had a figure like hers. All the other robots double-take at the revelation.
- Meaningful Name: You have three guesses as to where Aunt Fanny gets her name from.Fender: "Couldn't call her Aunt Booty."
- Nice Girl: Aunt Fanny is a kind-hearted robot who offers a roof to any robot down on their luck.
- The Protagonist: The short film Aunt Fanny's Tour of Booty revolves around her giving others a tour of the Robot City train station.
- Separated by a Common Language: In the UK, her name is "Aunt Fan", because there, "fanny" is another word for lady parts.
- Ship Tease: With Bigweld. It's assumed that they are a couple by the end of the film, seeing that they dance together.
- Sit on the Camera: When Aunt Fanny first meets Rodney, she unintentionally crushes him with her you-know-what.
- Team Mom: Aunt Fanny acts sort of like a grandmother figure to Rodney and the other Rusties.
Voiced by: Chris Wedge
- Badass Adorable: Just look at his version of Screaming Warrior as he prepares to attack Madame Gasket.
- Do-Anything Robot: Rodney invented him to help his dad with his job.
- Heterosexual Life-Partners: With Rodney.
- Pintsized Powerhouse: Is able to take on Madame Gasket near the end of the film.
- True Companions: He is with Rodney almost anywhere he goes.
Voiced by: Halle Berry
- Action Girl: She doesn't fully show this until the start of the film's climax, when she reveals that she has roller blades hidden in her feet, and is able to take out several security guards in order to try to get to the escaping Rodney and Bigweld. This is even more prominent in the Chop Shop battle, when she hons her skills even more to try to defeat Madame Gasket's minions.
- Back-to-Back Badasses: During the Chop Shop battle, she and Piper both get confronted by some of Gasket's minions, but they are able to take them out easily - they lock their arms together and Piper kicks them away while Cappy spins her.
- Betty and Veronica: The Veronica to Piper's Betty for Rodney's Archie.
- Birds of a Feather: See Dark and Troubled Past above. According to all that, another reason she develops appreciation for Rodney is that she sees a lot of herself in him, the two coming from similar backgrounds and being firm believers in what Bigweld stood for.
- The Chick: Once Rodney and his friends band together to stop Ratchet once and for all, Cappy takes this mantle due to being the primary female and the Love Interest of Rodney (Piper, due to being younger, is thus more of a Tagalong Kid). She's certainly of the Action Girl variety, making good use of those hidden skates under her feet and making a consistent effort to take out Ratchet's minions.
- Dark and Troubled Past: According to other merchandising and an interview with Halle Berry, Cappy had a very similar past to Rodney, being another robot made of spare parts and having underpriveleged parents - her father being a vaccuum cleaner and her mother a set of attachments. And during her early days at Bigweld Industries, someone (most likely Ratchet) forced her to trade all of her old parts for upgrades to get a better position at her job.
- Getting Crap Past the Radar: Her party outfit at the Bigweld Ball is literally screwed into her shoulders.
- Half-Hearted Henchman: In her first appearance, she is on Ratchet's side, but does not agree with his new policies in the slightest.
- HeelFace Turn: Was originally part of Ratchet's team, but ultimately decides to defect to Rodney's team, due to the former's lack of regard for outmodes.
- Nice Girl: Although she does start out on Ratchet's side, Cappy is actually one of the kindest characters in the film, showing sympathy and concern for the outmodes and trying to keep Rodney as far from danger as she can. She is also very supportive of Rodney, showing him a warm, understanding smile after his downhearted phone conversation with his parents, and an encouraging one after Bigweld comes out of hiding and tells Rodney that he wants to grow up to be like him.
- Official Couple: Becomes this with Rodney.
- Screw This, I'm Outta Here!: She leaves Ratchet to side with the good guys a bit over halfway through the film.
- Sexy Backless Outfit: She wears one during the Bigweld Ball scene. What's more is that the top of it is visibly bolted to the front of her body.
- Single Woman Seeks Good Man: She dislikes Ratchet because of his arrogance and uncaring attitude toward other robots. When she first meets Rodney, she takes an instant liking to him because of his enthusiasm for being an inventor and his wish to meet Bigweld. When their paths cross again at the Bigweld Ball, she is once again shown to admire him when he speaks up and loudly questions Ratchet on where Bigweld is.
- Strong Girl, Smart Guy: The Strong Girl (goes against Ratchet and the rest of her colleagues to stick up for the outmodes) to Rodney's Smart Guy (comes up with inventions to help make the robot world a better place).
- Token Good Teammate: Of Bigweld industries while it was under Ratchet's control. She was the only one not satisfied with Ratchet's plans and is a strong believer in the old motto, "You can shine no matter what you're made of."
- Tomboy and Girly Girl: The Girly Girl to Piper's Tomboy; she is very gentle and stolid when compared to the latter and has a more beautiful and typically feminine appearance.
- Violently Protective Girlfriend: She shows this when she is about to save Rodney from the clutches of Ratchet's henchmen - this is the point where she has her HeelFace Turn.
Voiced by: Stanley Tucci
- Bumbling Dad: Appeared to be this at first, when he and his wife are assembling their baby.
- Crippling Overspecialization: Before he gives Rodney a pep talk at the Rivet Town train station, he says that he wanted to be a musician, and he played quite decently, but his father was afraid that he wouldn't be able to make a living, so he got refitted to be a dishwasher and had no other options if ever something had to change for him.
- The Dog Bites Back: Towards the end of the film, Herb shoves his dishwashing suit onto Mr. Gunk when the latter tries to stop him from reuniting with Rodney.
- Dreadful Musician: Downplayed, as he actually used to want to be a musician, but near the end of the film, he at first is rusty, but is able to get better after the first few seconds.
- Good Parents: Quite possibly one of the best. Everything Rodney aspired to be and achieve was all thanks to Herb's influence. Even when he's weak and needs new parts, Herb never stops believing in his son and keeps pushing him to fulfill his dreams.
- Like Father, Like Son: It's extremely clear that Herb and Rodney have a lot in common, both having been idealistic dreamers and showing great talent for what they aspired to do.
- Nice Guy: Herb is a very loving and supportive father who will stay by his son's side if it takes him to the end of the world.
- Pursue the Dream Job: Like Rodney, he had a great ambition at a young age - to become a musician. Of course, something else happened to him later, but he finally gets his wish at the end of the film when Rodney gives him a three-bell horn and encourages him to play it.
- Reality Ensues: He gets off to a very iffy start when he tries playing the instrument Rodney gave him. He does get better with the help of the other musicians and the Rivet Town band, though.
- Screw This, I'm Outta Here!: See The Dog Bites Back above. He finally loses it with Mr. Gunk and quits his job as a dishwasher in order to get outside to see Rodney.
- So Proud of You: Seriously, how many times does this guy need to express how proud of his son he is?
Voiced by: Dianne Wiest
- Amazingly Embarrassing Parents: There are two instances where she pulls this off: when she and Herb are showing Rodney his twelve-year-old parts from his cousin Veronica, she embarrasses Rodney by saying "You know how popular she is!" in a sing-song voice, and when Rodney is leaving for Robot City - she exclaims, "Robot City?! You're just a kid!", to which Herb rolls his eyes, and while we don't see him in that shot, it is assumed that Rodney got slightly annoyed by this as well.
- Drama Queen: She is quite fussy and melodramatic during the train station scene, showing reluctance to let Rodney leave.
- Doting Parent: Her approach to parenting is considerably more protective than Herb's more relaxed tactic.
- Getting Crap Past the Radar: At the beginning, she tells Herb that he missed the delivery of the baby, but reassures him by saying, "Making the baby's the fun part,", which is followed by a "build a baby" logo on the box.
- Good Parents: Not to the same extent as Herb, but Lydia was still a kind and nurturing mother to Rodney.
- Innocent Innuendo: Her moment at the beginning of the film with the "build a baby" joke.
- My Beloved Smother: She is this to Rodney during the train station scene before she gives up and decides to let him go to Robot City, though she is noticeably teary-eyed about it.
- Nice Girl: A kindhearted and pleasant mother, if a bit protective and worrisome.
- Overprotective Mom: She is less comfortable about the idea of Rodney going to Robot City than Herb, going as far as ranting about how Rodney is "just a kid".
Phineas T. Ratchet
Voiced by: Greg Kinnear
- Bad Boss: He doesn't care much about his employees or outmodes.
- Corrupt Corporate Executive: He's a ruthless executive willing to put outmodes out of work.
- The Dragon: Many people assume him to be the Big Bad, but he is actually this. The true Big Bad is his mother, Madame Gasket.
- Even Bad Men Love Their Mamas: He's legitimately devastated when Madame Gasket winds up getting incinerated.
- Fantastic Racism: Has a strong dislike of rusty old robots, preferring the newer model of robots.
- Fate Worse than Death: Instead of being thrown into the incinerator like his mother, Ratchet is left hanging from the ceiling of the Chop Shop with all of his upgrades stripped away. The worst part is that he's hanging right next to his loser dad.
- Kick the Dog: When Rodney demonstrates Wonderbot to Ratchet, he promptly (and literally) kicks the little bot out and has his guards take Rodney back to the main entrance.
- Mama's Boy: Madame Gasket has him marching to the beat of her drum the entire movie.
- Screams Like a Little Girl: Does this several times in the film.
- Sharp-Dressed Man: He wears a shiny "suit" with a red tie. He loses it at the end battle.
- Villainous Crush: He makes very unsubtle passes at Cappy, much to her disgust.
Voiced by: Jim BroadbentThe monstrous and sadistic owner of the Chop Shop.
- Big Bad: Everyone thought that Ratchet is this, when it is actually Madame Gasket herself.
- Even Evil Has Loved Ones: Even though she tends to keep him under her thumb and can be a bit harsh, she clearly loves Ratchet and tends to fuss over him.
- Foil: Madame Gasket is one to Herb Copperbottom due to both of them being parents of a major character of the film (Herb to Rodney and Madame Gasket to Ratchet) who encourage their dreams and ambitions their children have. But while Herb is genuinely altruistic and encourages Rodney to pursue his dreams of becoming an inventor without any thought of what it would do for himself, Madame Gasket is an opportunistic hag who encourages Ratchet's ambitions of cracking down on "outmodes" to make everything shinier so she can continue her sadistic pleasure in melting down scrap in her chop shop to make new upgrades.
- Hoist by Her Own Petard: She uses the Chop Shop incinerator to transform old parts into new ones. It ends up being her own undoing.
- Karmic Death: At the end of the film, she gets tossed into her own incinerator.
- Lady Looks Like a Dude: She looks like an elderly man.
- Larynx Dissonance: Her voice sounds like an older man, given that she is voiced by Jim Broadbent. It's even lampshaded by Fender.
- My Beloved Smother: She often keeps her son under her thumb.
- Oh, Crap!: She is utterly horrified when Wonderbot sends her into the incinerator.
- Sadist: Has a great joy in threatening outmoded robots, especially Bigweld.
- Unsettling Gender Reveal: Rodney and the outmodes thought Gasket was a guy, until the latter reveals that "he" is a woman.
Voiced by: Dan Hedaya
- Jerkass: He is a mean-spirited jerk to Herb and his son Rodney.
- Laser-Guided Karma: At the end of the film, Mr. Gunk's Jerkass behavior ends up causing Herb to quit his job.
- Last-Name Basis: He calls Herb by his last name, Copperbottom.
- Mean Boss: A great exemplification of the trope, as it is implied that he is really mean to Herb.
- No Sympathy: He doesn't care about Wonderbot when he inadvertently makes a mess in this kitchen due to nervousness, when Wonderbot was able to help Herb and Rodney clean the dishes earlier.
Tim the Gate Guard
Voiced by: Paul Giamatti
- Gate Guardian: Served as this to Bigweld Industries.
- Jerkass: He had no qualms of being mean to Rodney and informing him that Bigweld Industries is under new management. Thankfully, he gets his just-desserts at the end of the film when Wonderbot kicks him away.
- Nice Character, Mean Actor: While he seemed to be really nice on Bigweld's show, in reality, he is actually a huge jerk who refuses to let Rodney in to see Bigweld.
Voiced by: Alan Rosenberg
- Adaptational Nice Guy: He's a lot nicer in the video game than he is in the movie.
- Ascended Extra: He is a minor character in the film, but actually has quite a prominent role in the video game, even going as far as to help Rodney in part of his quest.
- Brutal Honesty: When Fender complains about how he cannot afford that "fancy stuff" and is in need of a neck joint, Jack Hammer apathetically tells him that he has no other option."Sorry, pal. It's either upgrade or the Chop Shop for you."
- Four Eyes, Zero Soul: Downplayed. He does wear glasses and is not very sympathetic or understanding, but he does have some heart to him and is honest about what goes on in his shop.
- Good Is Not Nice: He may be a good guy, but he is very blunt and sarcastic and shows little concern for outmodes who can't afford upgrades.
- Jerk with a Heart of Gold: For all that's been said above, he is being 100% honest, and later on in the film when an angry mob of outmodes confronts him, he points to Rodney and says that he is the one they can find help from. He also apologizes after Piper gives him a comeuppance for the way he treated Fender and openly admits that he doesn't have the right parts for him, and gives Rodney the right things to fix Fender's head with.
- Lack of Empathy: More towards Fender than anyone else, but it's clear that he is not empathetic for the most part.
- Smug Snake: Disdainful towards outmodes and certainly has quite a mean spirit to him.
- What the Hell, Hero?: This happens to him twice - first when Piper calls him out on his callous behavior towards Fender, and second when the outmodes gather round his shop and confront him over only selling upgrades from that point onwards.
Voiced by: Natasha Lyonne (US), Cat Deeley (UK) and Jackie O (AUS)
- Ensemble Dark Horse: Despite being a very minor character, she does have a bit of a following among the fanbase, even being included as a key supporting character in some fanfics.
- Fanservice Extra: She's certainly an attractive girl, even if she's an unimportant character that doesn't do anything that's relevant to the plot.
- Getting Crap Past the Radar: When Bigweld is making his big comeback to his factory, she is heard talking to someone on the phone about using "Brazilian wax". Y'know, for getting that extra shine on her chassis.
- The way she emphasizes her last name when introducing herself to Fender makes it sound like she has the robotic equivalent of a dirty sounding last name. note
- Laugh of Love: Loretta gives off quite a few of these whenever she and Fender are having their moments.
- Noodle People: She's very tall and skinny.
- Nothing Exciting Ever Happens Here: When she first appears, she is talking to someone at the Bigweld Ball about how none of the parties she goes to have any interesting men show up. Cue Fender jumping out at her in his flamboyant disguise and playfully introducing himself as "Fender von Fender".
- Official Couple: It's hinted that she and Fender get together by the end of the film.
- Pink Means Feminine: She is a very ladylike robot who wears a pink dress.
- Satellite Love Interest: Loretta's role in the film is quite small and it revolves almost entirely around being Fender's eye candy.
- Single Woman Seeks Good Man: She seems to find Fender attractive because of his appearance, giving her the idea that he could be an "eccentric billionaire."
- Ugly Guy, Hot Wife: Well, Ugly Guy, Hot Girlfriend in this case, since she just becomes Fender's girlfriend and the established relationship is not taken very far from there.
- Upper-Class Twit: Seeing her appearance and somewhat mischievous nature, she certainly gives off shades of this.