Dora "The Explorer" Marquez
Voiced by Kathleen Herles (2000-2007), Caitlin Sanchez (2008-2011), Fatima Ptacek (2012-present)A seven-year-old girl who likes to spend her time going on trips and exploring new places.
- Breaking the Fourth Wall: She talks to the audience all the time to try and teach skills to the children.
- Costume Evolution: For the last seasons of the show, her shorts become longer and her shoes change to pink.
- Free-Range Children: She goes on adventures in every episode and her parents are fine with that regardless of any dangers she could run into.
- Girliness Upgrade: "Tween Dora" She also got more stereotypically feminine as the years went on.
- Girly Girl with a Tomboy Streak: As a preteen, she's more stereotypically feminine than she was at seven but still has had adventurous elements.
- Gratuitous Spanish: She speaks English sprinkled with Spanish.
- Hairstyle Inertia:
- She's had a bob since she was a toddler.
- This is averted as a preteen. Dora's grown her hair out past her shoulders.
- Ideal Hero: She is brave, kind, and never turns down someone in need of help.
- Idiot Hero: Implied. Why else would she ask the viewer a question every ten seconds?
- Incorruptible Pure Pureness: She is kind and nice to everybody, even the villains.
- It Runs in the Family: Dora inherited her grandmother's exploration hobby. Her mother is an archaeologist.
- It Was a Gift: Dora got the star pocket from her grandmother. Her backpack, map and necklace with matching bracelet is also a gift.
- Kid Heroine: She's seven, upped to ten in Dora and Friends: Into The City.
- Kiddie Kid: She's a tween in Dora and Friends: Into The City but doesn't act all that much more mature than she did at seven, likely due to it being a Nick Jr cartoon aimed at little kids.
- Let's Get Dangerous!: Often in the specials when she actually has to go up against a legit threat, she admittedly can be a bit badass.
- Nice Girl: She is very nice to everyone, including Swiper and all the villains from the specials.
- No Indoor Voice: Has a tendency to shout a lot.
- One of the Boys: Especially in the earlier episodes, most of her friends are boys.
- Outdoorsy Gal: She loves being outdoors and exploring.
- Pink Means Feminine: Her shirt (which exposes part of her belly), which especially applies in the new series.
- Plucky Girl: She is determined and never gives up.
- Token Human: Initially the only main human character of the series, before more are introduced.
- Tomboy: She loves exploring, has short hair, hangs out with mostly boys, and doesn't really seem to care about her looks.
- Tomboy and Girly Girl: The Tomboy to Isa's Girly Girl.
- Tomboy with a Girly Streak: She loves girly things and doesn't mind dressing up nice for occasions.
- Signature Move: Dora's "Super Soccer Kick".
Boots the Monkey
Voiced by Harrison Chad (2000-2007), Regan Mizrahi (2008-present), Danny Trejo (Dora and the Lost City of Gold)He's five years old, and he's Dora's best friend.
- Accessory-Wearing Cartoon Animal: He wears only boots.
- Amazing Technicolor Wildlife: A blue and pink monkey.
- Barefoot Cartoon Animal: Inverted, he only wears boots. It's in his name!
- Different in Every Episode: Boots is a born gymnast, and he will usually treat a hill as a chance to show off. Other times, he'll just walk.
- Early Installment Character-Design Difference: When his older self appeared in Dora the Explorer, he wore a polo shirt. This was scrapped in Dora and Friends: Into the City.
- Furry Reminder: Sometimes makes monkey noises or swings in trees.
- It's the Best Whatever, Ever!: Boots describes his special day as "my best day ever" and "like all my favorite parts put together."
- The Lancer: There is an early Running Gag where Boots rushes into answering a puzzle, only to get it wrong and flee back to Dora's side.
- Leitmotif: A short, fast harmonica piece is his theme.
- Like Brother and Sister: Boots and Dora aren't just good friends; they love each other. "This is evident in "Big Sister Dora", when he speaks of becoming "a big monkey brother." Boots is on close terms with Dora's parents, as well.
- Meaningful Name: His name is Boots and he wears red boots.
- Ninja Pirate Zombie Robot: On one Halloween, he can't settle on a costume, so he dresses up as a fire chicken.
Voiced by Sasha Toro(2000-2007), Alexandria Suarez(2008-present)Dora received this backpack just before her first trip.
- Animate Inanimate Object: A talking backpack.
- Bag of Holding: A classic example, as she is able to hold objects larger than her.
- Catchphrase: After picking out the item for Dora, she'll usually say, "Delicioso!" after 'eating' the rest of the things.
- Chekhov's Gun: A number of objects that fit this trope are held inside of Backpack for later use.
- Crazy-Prepared: Absolutely. A number of things that Dora needs just arbitrarily happen to be in the bag.
- A Dog Named "Dog": She's a backpack named "Backpack".
- Girliness Upgrade: She's given a "girlier" redesign in Dora and Friends: Into The City.
- "I Am" Song: Whenever she's introduced in an episode, she'll sing a song about how she has everything Dora needs.
- Say My Name: She can be summoned by someone shouting her name.
Voiced by Marc WeinerHe has his own pocket in Dora's Backpack and is...well, it's pretty self-explanatory.
- Animate Inanimate Object: A talking map.
- Catchphrase: He says, "Say it with me" nearly every episode.
- Different in Every Episode: The map itself is never the same twice, but it never fails to meet Dora's needs.
- A Dog Named "Dog": A map named "Map".
- "I Am" Song: He has an introduction song that involves stating his purpose and introducing himself over and over.
- Phrase Catcher: Dora often references him with "Who do we ask for help when we don't know where to go?".
- Say My Name: Like Backpack, you have to say his name for him to do his thing.
Benny the Bull
Jake Burbage(2000-2007), Matt Gumley(2008-present)
- Funny Animal: He stands on two legs and speaks but still has the basic design of a bull.
- Hiccup Hijinks: At the end of one episode, it's revealed that the "hic-boom-oh!" noise was him hiccuping, falling over, and exclaiming in surprise.
- The Klutz: Benny is really clumsy at times.
- The Load: Is often portray as being bumbling and trouble prone, with a whole episode revolving around saving him.
- A Load of Bull: Obviously, he's a bull.
Tico the Squirrel
Voiced by Jose Zelaya(2002-2007), Jean Carlos Celi(2008-present)
- Amazing Technicolor Wildlife: Is a purple squirrel.
- Animals Not to Scale: A squirrel half the size of a bull calf.
- Half-Dressed Cartoon Animal: Wears a waistcoat and no pants.
- Keep It Foreign: In Spanish dubs, Tico speaks English.
Isa the Iguana
Voiced by Ashley Fleming(2000-2007), Lenique Vincent(2008-2011), Skai Jackson(2012-present)
- Animals Not to Scale: An iguana who's nearly the size of a human girl.
- Lovable Lizard: A friendly iguana who is The Chick of Dora's Five-Man Band.
- Nature Lover: She enjoys gardening.
- Tomboy and Girly Girl: The Girly Girl to Dora's Tomboy.
Swiper the Fox
Voiced by Marc Weiner (series), Benicio del Toro (Dora and the Lost City of Gold)The closest thing the series has to a villain. He is a teenage fox who tries to steal and hide things from Dora.
- Accessory-Wearing Cartoon Animal: Wears only a mask and gloves.
- Affably Evil: He's surprisingly personable when he's not trying to steal things.
- Animal Stereotype: He fits the "shifty fox" stereotype.
- Friendly Enemy: When he's not trying to rob them, Swiper is actually quite friendly towards Dora, even sincerely wishing her the best of luck when she loses something.
- Future Me Scares Me: The Bad Future (by this shows standards) version of Swiper in the Yet Another Christmas Carol special. In that future, Swiper got so bitter after being put on Santa's naughty list that he became a real thief who steals (nonstop) regardless of whether or not the victim says Swiper, No Swiping!. It was bad enough that they had to stop having the Christmas Eve Party because he stole everything. As a result of this behavior, he ends up alone on Christmas with only the stuff he stole as company.
- Gentleman Thief: Or at least, what he's seemingly trying to be. His motivation appears to only be the thrill of stealing, rather than greed. He always honors the three Swiper No Swiping rule and never takes things for himself. He can also be convinced to return what he stole for a good reason: upon learning he stole a present for Dora's puppy, he immediately apologizes and hands it back to her.
- Harmless Villain: All he does is annoy Dora and occasionally throw her stuff away.
- Jerk with a Heart of Gold: When he's not trying to steal something from Dora and Boots, he can come off as nice.
- Left the Background Music On: Dora can hear his theme.
- Leitmotif: Like Boots, he has one. It sounds like a shrub being shaken or, more accurately, maracas. This is also enough to alert Dora to his presence.
- Not-So-Harmless Villain: Sometimes he puts genuine effort into trying to steal something or even tries more than once in an episode.
- Phrase Catcher: He causes Dora to say, "That sneaky fox is always trying to swipe our stuff!" and "Swiper, no swiping!".
- Poke the Poodle: Whenever Swiper actually succeeds in stealing something, he never runs off with it, but just throws it offscreen. It's nothing but a minor inconvenience to Dora, suggesting Swiper doesn't steal because he wants something, but because it amuses him. In one episode, he even tells the audience (and by extension Dora) where he put something because hes that determined Dora wont get it.
- Swiper, No Swiping!: The Trope Namer: when he's told not to steal, he just gives up.
- Team Rocket Wins: A minor variant since Dora still usually succeeds in the end, but this tends to happen whenever Swiper actually succeeds in swiping.
- Teens Are Monsters: He is a teenaged ruthless fox.
- Throw the Dog a Bone: On occasion, he's been known to actually steal something and toss it away before the characters could say "Swiper, no swiping" three times. Of course, this being Dora the Explorer, it's a minor inconvenience at best. In one episode, Dora even comes pretty close to saying it thrice, but Swiper manages to pounce upon her and take three things, more than he usually takes.
Mami and Papi Marquez
- Good Parents: Generally come off as supportive parents.
- Happily Married: They're a married couple and get along fine.
- It Runs in the Family: Mami's an archaeologist.
- Unnamed Parent: Their real names are unknown.
- Cool Old Lady: She used to be an explorer and tells interesting stories to Dora.
- It Runs in the Family: She's a former explorer.
- Sick Episode: Enforced in the Little Red Riding Hood parody episode since the original story involved a sick grandmother. In her case, she had a cold.
- Unnamed Parent: Or rather, Unnamed Grandparent— her name is unknown.
Guillermo and IsabellaDora's younger siblings, who are twins. They were born in the series and can now sit up, making them about four to eleven months old (as no more than a year has passed).
- Pink Girl, Blue Boy: Isabella wears a pink shirt, while Guillermo wears a blue one.
- No Name Given: Up until Dora's Jack-In-The-Box, their names were never revealed.
Big Red Chicken
A giant rooster who likes to party.—-
- Color Character: Has "Red" in his name.
- A Dog Named "Dog": A chicken with "Chicken" in his name.
- Genki Boy: Very active and enthusiastic.
Grumpy Old Troll
A grumpy troll who lives under a bridge and won't let you cross it unless you solve a riddle.
- Happy Dance: On the rare occasion that he's thankful for something, he does a little dance that he describes as his "thank-you dance".
- "I Am" Song: Like Map and Backpack, he has his own song.
King Juan el BoboA forgetful Spanish-accented king. He is a grown-up version of Juan Bobo of the books.
- A Dayinthe Limelight: He is the main protagonist of "A Crown for King Juan El Bobo".
- Ascended Extra: He first appears in the third season as a nameless king named "King". In the fourth season, he changes his name from "King" to "King Juan El Bobo" and has more screen time.
- Butt-Monkey: He has flippers on his feet in "Dance to the Rescue" and forgets his crown in his own episode.
- Chuck Cunningham Syndrome: He is absent from the fifth season to present.
- What Happenedtothe Mouse?: He vanishes after appearing in the fourth season episode "Dance to the Rescue" and doesn't appear after the fourth season.