Voiced by: Patton Oswalt
- Be Yourself: What he ultimately learns by the end of the movie:I'm sick of pretending. I pretend to be a rat for my father, I pretend to be a human for Linguini. I pretend you exist so I have someone to talk to! You only tell me stuff I already know! I know who I am! Why do I need you to tell me? Why do I need to pretend?
- Bratty Half-Pint: He's a rat and can be extremely sneaky. He learns to grow out of it.
- Brown Eyes: Showing his more practical and serious side than his family.
- Bunny-Ears Lawyer: He's an awesome, talented, efficient Supreme Chef. Oh, and he's a rat.
- Cursed with Awesome/Blessed with Suck: What good is being a great chef with refined tastes if A) your Extreme Omnivore family thinks you're just being unnecessarily picky and B) you're more likely to be slaughtered than be allowed into a proper kitchen?
- Deadpan Snarker: Makes quips from his family to Linguini.
- Escape Convenient Boat: Tried twice; only works the second time when he escaping from Skinner.
- Expressive Ears: With his ears, you can tell if he's sad, disappointed, or happy.
- Fat and Skinny: With Émile. He's the Skinny.
- Head Pet: Not really a pet, but he is Linguini's Non-Human Sidekick and is kept under his hat for the most of the film.
- Missing Mom: She was apparently written out of the movie.
- Non-Human Sidekick: Though the "Sidekick" part may be debatable.
- The Nose Knows: Useful for both cooking and sniffing out poison.
- Ridiculously Cute Critter: The first time anyone will want to hug a rat.
- Sibling Yin-Yang: With Émile. He wants to break out of the colony's traditions, but Emile wants to honor them.
- Silent Snarker: When he’s around the humans and can’t talk.
- The Speechless: When he’s around the humans. Around the rats, however, he can talk, and he’s got a lot to say.
- Supreme Chef: He's a great cook and longs to go pro.
- Technician vs. Performer: The performer to Colette's technician.
- "Well Done, Son!" Guy: Rémy, who is never quite understood by his father, but despite this, wants to be appreciated by him.
- What Measure Is a Non-Cute?: Lampshaded. Rémy's major struggle is the fact that humans think rats are gross; the movie shows them as just mischievous and self-interested at worst.
- What the Hell, Hero?: Linguini calls Rѐmy out for stealing food from the kitchen.
- You Dirty Rat: Averted. Before Rѐmy handles anything with his front paws, he washes them.
- Also Discussed Trope, early in the movie Emile mocks Rémy for walking on two paws, and he explains that he does it to avoid getting his food dirty.
Voiced by: Lou Romano
- Adorkable: Clumsy mannerisms? Check. Distracted by Colette? Check. Master of Buffy Speak? You bet.
- Amazon Chaser: When Colette's been assigned the task to teach Linguini, she nails his sleeves to the bench with knives while performing a Badass Boast and telling him who he's dealing with. When finished, she pulls out the knives and walk away. Linguini's response to her behaviour? "Wow!"
- Buffy Speak: "I am not your puppet! And you are not my puppet... controller... guy!" "Appetite is coming and he's going to have a big ego! I mean Ego! He's coming! And he's going to order! Something... from our menu! And we're going to have to cook it!"
- Bunny-Ears Lawyer: Is seen as this In-Universe, since Remy controlling him would look weird to anyone who wouldn't know about it. Then he later reveals that Rèmy is the real mastermind behind his talent.
- Chekhov's Skill: Linguini’s roller skating skills, which he uses to become a really fast waiter.
- Cute Clumsy Boy: At least, when he's not on roller-skates.
- Disappeared Dad: The origin of his dad is unknown. It turns out that his father was actually Gusteau, who is dead by the beginning of the film.
- Distracted by the Sexy: Colette, unfortunately for Rѐmy.
- Fiery Red Head: Averted. Though, when he does get angry, he's not that fun to be around. See the first quote under Buffy Speak.
- Heroic Bastard: Gusteau's Bastard, specifically)
- Lethal Chef: His first attempt he tried cooking it made him immediately vomit. The smell almost made Rѐmy throw up.
- Lost Orphaned Royalty: Maybe not in the "royalty" sense, but his father Gusteau is critically famous and has specified Linguini as the next heir to his restaurant, much to Skinner's despair.
- A Man and His Rat: He even calls Rémy, "Little Chef".
- Masculine Girl, Feminine Boy: The Feminine Boy to Colette's Masculine Girl.
- Missing Mom: It is mentioned that she passed away prior to the events of the movie.
- Official Couple: With Colette.
- People Puppets: How Rѐmy controls him.
- Quirky Curls: Red curls to showcase his quirkiness.
- Teacher/Student Romance: Since Colette's been assigned the task to teach him about cooking in a small portion of the film, and that they later become an Official Couple, this qualifies.
- Youthful Freckles: To show how easily excited he can be.
Voiced by: Brad Garrett
- Big Fun
- Catchphrase: "Anyone can cook."
- Disappeared Dad: Turns out he's the father of Linguini.
- Gratuitous French
- Imaginary Friend/Not-So-Imaginary Friend: Serves as this for Rèmy for most of the film. Which one he is (if either at all) is up to interpretation.
- Maybe Magic, Maybe Mundane: Whether he's supposed to be Rèmy's Imaginary Friend, conscience, Gusteau's actual ghost, or something else entirely isn't clear. Interestingly, the script refers to him as "the Gusteau sprite". Whatever he is, he's somehow capable of physically grabbing Rèmy and yanking him around.
- Posthumous Character: He serves as Rèmy's Imaginary Friend and conscience for the most of the film, and also specified his son Linguini as the next heir to his restaurant.
- Spirit Advisor: Either this or Imaginary Friend. It depends on the audience's interpretation.
- Supreme Chef
- Wide-Eyed Idealist: An optimist by nature, and recognizes that anyone might have an unexpected talent.
Voiced by: Peter Sohn
- Big Eater
- Big Fun
- Big Little Brother: Contrary to popular belief, Emile is Rémy’s younger brother, not older. During the movie, Emile calls Rémy “little brother”, but this is simply meant to be Emile teasing Rémy about literally being physically smaller than he is. Tie-in material of the movie actually mentions this trope. In the “Guide to Rémy’s World” book, Emile himself even says that he likes “hanging out with my little brother (and I mean size, not years)”.
- Extreme Omnivore: Moreso than any other rat character.
- Fat and Skinny: With Rѐmy. He's the fat one.
- Fear of Thunder: Shows signs of this in the movie, and the book mentioned above outright states that he hates lightning.
- Foolish Sibling, Responsible Sibling: Flip-flopped between the brothers. More often than not, Émile is the Foolish to Rémy's Responsible.
- Nice Guy: He's pretty cheerful and sweet much of the time.
- Sibling Yin-Yang: With Rѐmy.
- Stealth Insult: Gives one to Rémy.Rémy: *trying to get Emile to understand taste* Chew it slowly… think only about the taste. See?Emile: Not really.Rémy: Creamy, salty sweet. An oaky nuttiness? You detect that?Emile: *sarcastically* Oh, I’m detecting nuttiness.
- You Dirty Rat: Unlike Rѐmy, Émile doesn't wash his hands before eating or cooking. Granted, he doesn't really cook ever, but he eats twice as much, so that makes up for it.
Voiced by: Brian Dennehy
- All There in the Manual: His name is (widely believed to be) never said in the movie, only appearing in the credits and in tie-in merchandise and material of the film.
- However, his name actually IS spoken in the movie. After Rémy has been reunited with his family, during the scene where they’re sitting around a small table, a rat comes up to talk to Django in the lower right-hand corner of the screen. If you listen closely, you can hear the rat say “Hey, Django…”, to which Django replies “Hey, boy, what’s up?”, then the rat proceeds to tell Django something that makes him laugh. Fun fact.
- Badass Dad: Can easily command an entire clan of rats and will leap right into the action himself to help out Rémy if the situation calls for it.
- Big Ol' Eyebrows: The “Guide to Rémy’s World” book even mentions this.
- Humans Are Bastards: He’s quite adamant about this.
- Jerk with a Heart of Gold: Gruff and tough when he needs to be, but is actually a pretty jolly guy and clearly loves his boys.
- Large and In Charge: He’s the leader of his colony and is quite huge, second to Git, the lab rat.
- Named After Somebody Famous: Said to be named after Django Reinhardt, the famous gypsy jazz musician, which explains Django's (the rat) fondness for this type of music, and why they snuck a Reinhardt stamp into the Your Friend the Rat short.
- Papa Wolf: He’s very protective of his kids and really doesn’t want any harm to befall them at the hands of humans.
- "Well Done, Son!" Guy: Becomes this toward Rémy at the end.
Voiced by: Janeane Garofalo
- Badass Boast: Performs one on Linguini when she's been assigned the task to teach him.
- Biker Babe: Rides a stylish motorcycle.
- Cleopatra Nose
- Defrosting the Ice Queen: Starts being harsh towards Linguini, but only so he can succeed. She even becomes a couple with him.
- Determinator: Colette was willing to go through hell to become a top chef.
- Double Standard: Abuse, Female on Male: Colette hits Linguini in the face on several occasions when she is upset with him. He never complains and she is still presented as completely sympathetic throughout the film. See also Slap-Slap-Kiss further down.
- Face Palm: When Ego looks through Gusteau’s kitchen after tasting Rémy’s dish.
- Feminine Women Can Cook: Inverted. Colette makes it clear that it's very difficult for a woman to get into haute cuisine, due to the sexism ingrained in the system, and that the only reason why she managed to become a professional cook was because she was willing to go through hell.
- Gratuitous French
- Hair Color Dissonance: Lighting in certain scenes gives it a violet tint.
- Hot-Blooded: A good example: "Keep your [Linguini] station clean, or I will kill you!"
- Masculine Girl, Feminine Boy: The Masculine Girl to Linguini's Feminine Boy.
- Neat Freak: "Keep your station clean, or I WILL KILL YOU!"
- Official Couple: With Linguini.
- The Smurfette Principle: She's the only woman in the kitchen. She actually brings this up and the reason why when she laid down the law for Linguini.
- She's pretty much the only female character in the entire movie. (Unless you count Posthumous Character Renata Linguini or the female rat at the end of the film).
- Teacher/Student Romance: Since she's been assigned the task to teach Linguini about cooking in a small portion of the film, and that they later become an Official Couple, this qualifies.
- Technician vs. Performer: The technician to Rémy's performer.
- Tsundere: Type A. Colette is harsh and hot blooded, but is also loyal and kind.
- You Go Girl: She was willing to go through hell to get a job in a gourmet kitchen; a place only men are allowed to work. This fact is also Truth in Television.
Voiced by: Ian Holm
- Big Bad: He is Rémy and Linguini's central antagonist.
- Disproportionate Retribution: Threatens to have Linguini drawn and quartered when he catches him cooking his soup. He was obviously exaggerating, but the sentiment is quite real.
- Does This Remind You of Anything?: Skinner is based on the French star comedian Louis de Funès. He also looks a little like Adolph Caesar.
- Dropping the Bombshell: Skinner reveals during a discussion with his lawyer that he is paranoid about the rat, thinking Linguine is trying to psyche him out. Skinner's lawyer notes that he had to take a second sample of Linguine's hair. When Skinner asks why, the lawyer says:Lawyer: The first time, it came back identified as rodent hair.
- Even Evil Has Standards: Despite the fact that he is an evil, selfish schemer, he takes his job as chef seriously. The only time he is willing to serve a substandard meal is when he sees it as absolutely necessary to put Linguine in his place. Too bad it backfires on him.
- French Jerk
- Gratuitous French
- Inspector Javert: Always accuses the rat of being the real chef.
- Large and In Charge: Subverted; Skinner is in charge of a restaurant where all of his employees are about twice his height. Then it's double subverted when you realize that his predecessor was Gusteau, who we could safely assume to have been the largest person in the room.
- Large Ham: He's always prone to dramatic about anything, from his cooking to the rat.
- Meaningful Name: Named after scientist B. F. Skinner, who performed experiments on rats to study animal behaviour.
- The Napoleon: The shortest in the kitchen and the most anger issues.
- Oh, Crap: Both Skinner and the health inspector after barging in the kitchen and seeing all the rats.
- Properly Paranoid: He is right about a rat being a chef.
- Reassignment Backfire: Skinner, trying to get Linguini kicked out of the kitchen, gives him the task of cooking a recipe that Gusteau himself said was a disaster. To his shock, Rémy quickly fixes the recipe to the point where it is so delicious that everyone else in the restaurant wants it, running the cooks ragged to keep up with orders and convincing everyone else in the kitchen that Linguini is a master chef.
- Sanity Slippage: He goes through this throughout the entire movie, to the point he made conspiracy theories of the rat chef. Even his lawyer asks if he should be worried about his client.
Voiced by: Peter O'Toole
- Ambiguous Disorder: They never said if anything was wrong with Ego, but it's likely that he may have been suffering from depression and had become bitter over the course of time. This all changes when he takes a bite of ratatouille.
- Caustic Critic: Lampshaded to death in his final review.
- Dark Is Not Evil: While he looks like a potential villain, he's just a very harsh critic. He has high expectations, wanting to see at least one restaurant give him an experience to remember.
- Deadpan Snarker: For a good 3/4 of the movie.:Anton Ego: (about the restaurant) "Finally closing, is it? "Servant: "No..."Anton Ego: "More financial trouble?"Servant: "No, it's..."Anton Ego: "...announced a new line of microwave egg rolls, what? Spit it out!"
- Dramatic Drop: He drops his pen when he first tastes Rémy’s dish.
- The Dreaded: His taste buds are so hard to please that even Gusteau, Rémy's indirect mentor, couldn't do so.
- Final Boss: Satiating his taste buds is Rémy's final real challenge.
- Jerk with a Heart of Gold: After Gusteau's is forced to close, it's heavily implied that he helped front the money to open La Ratatouille, and he's a regular customer there. He's also one of the few people who respects and appreciates Rémy's talent even after finding out that he's a rat; he even sacrificed his job and reputation to give Rémy's cooking the praise it deserves.
- No Celebrities Were Harmed: His appearance was inspired by French actor and director Louis Jouvet. It's also been claimed (though not confirmed) that Ego was based on theater critic Kenneth Tynan, who was close friends with Peter O'Toole in real life.
- Pensieve Flashback: When he takes a bite of ratatouille, he instantly thinks back to his mother making him ratatouille years ago. It's safe to assume that she's the reason why he became a food critic. And all of this is done without a line of dialogue.
- Punch Clock Villain: Perhaps he's overly harsh, but as a critic, it's his job to critique restaurants he doesn't like.
- Reasonable Authority Figure: Even when it's revealed that Rémy was the one who prepared his dish, he was more than willing to dub him the finest chef in France (and keep quiet about the fact that they're breaking the rules about not having rats in a kitchen).
- Secret Keeper: He wrote his review without mentioning that "the genius who works at Chef Gusteau's" is a rat.
- Sesquipedalian Loquaciousness: Especially his ending narrative is incredibly hard to understand as a kid. Then again, he's a critic.
- Spit Take: Subverted; he suddenly stops in the middle of one to he make sure the wine he’s drinking is okay to spit out. It apparently isn’t.
Voiced by: Will Arnett
- Chekhov's Gag: "I killed a man… With this thumb."
- Gratuitous French
- Multiple-Choice Past: Keeps changing his story of how he ended up in jail.
- Mysterious Past: How did Horst wind up in jail?
- Noodle Incident: The exact conditions of why he was placed in prison.
- Once Killed a Man with a Noodle Implement: "I once killed a man with this thumb."