Most of the characters (and all of the main characters) in this Disney Channel show are all members of the same family, although their neighbors, the Peters, appear semi-frequently.
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Harley Diaz
Played by: Jenna Ortega
Out of all the siblings, Harley is clearly the main character, as well as the show's narrator.
- Brainy Brunette: To the point her parents don't even think to check her report card; they just assume it's perfect.
- Breaking the Fourth Wall: Harley frequently talks to the audience to explain what's going on.
- Cool Big Sis: All three younger siblings seem to look up to her, but especially Daphne.
- Daddy's Girl: Seems to be closest to her father out of all her siblings.
- Gadgeteer Genius: Spends most of her free time inventing things.
- Genki Girl: Very, very peppy and talkative.
- The Hero: She’s the main character of the show.
- Hot-Blooded: At least when it comes to her next-door neighbor, Aidan.
- Hypocrite: Harley complains about Daphne being so manipulative, yet in several episodes, Harley is shown to be manipulative towards her parents.
- It's All About Me: Even she has her moments as she often deceives her siblings to get her way.
- The Leader: To her entire family. Even her parents tend to look to her for what to do in difficult situations.
- Middle Child Syndrome: The middle of seven children.
- Nice Girl: She's very kind and always sees the good in people.
- The Smart Girl: Definitely the brains of the family. (See Brainy Brunette above.)
- Surrounded by Idiots: Harley definitely feels this way about her siblings at times, because they always break everything she makes or owns. Plus, even her own parents aren't always reliable.
- Wrench Wench: She's good at fixing things.
Rachel Diaz
Played by: Ronni Hawk
The oldest of the seven children, who tends not to get along with the younger members of the family.
- Aloof Big Sister: Tends to not like spending time with her younger siblings, at least in the first season.
- Alpha Bitch: Of the family, at least at first. Also, she's the head cheerleader in school.
- Cool Big Sis: Seems to be evolving into this in season 2.
- The Fashionista: Definitely the most fashion-obsessed of the Diazes.
- Girly Girl: Easily the most feminine of her sisters.
- Hidden Heart of Gold: Vain yes, but there's good in her somewhere.
- It's All About Me: When she uploads photos to her social media account, she crops the image to remove anyone else standing nearby when the photo was taken, even if they're literally centimeters from her! She prefers that her boyfriend Cuff remain unemployed because a job distracts him from spending 100% of his time focused on only her.
- Ms. Fanservice: Especially in the earlier episodes.
- Phoneaholic Teenager: Really likes her technology.
- Put on a Bus: As of "Stuck With Rachel's Secret", she leaves the family to attend a fashion program in France.
- Separated-at-Birth Casting: Looks pretty much identical to her mother (Suzy, below).
Georgie Diaz
Played by: Kayla Maisonet
One of the older-middle children, the sportiest of the siblings. She becomes the oldest in the household after Rachael leaves.
- Bad Liar: Generally horrible at lying.
- The Klutz: Extraordinarily clumsy for an athlete, especially in season 1.
- Nice Girl: To the point of being too nice sometimes. In season 3 she's even explicitly called the nicest member of the family.
- Out of Focus: Up until season 3, she's the Big who's most likely to be missing from an episode, usually because of a game, practice, or sports camp.
- Passionate Sports Girl: Horrible at most sports, but still very much enjoys them.
- Quirky Curls: Oddly enough, the only one in her family to have them.
- Tomboy with a Girly Streak: Easily as boy-crazy as Rachel, although generally very much a tomboy.
Ethan Diaz
Played by: Isaak Presley
One of the older-middle children, and the oldest boy. The family musician.
- Dreadful Musician: Not very good at playing guitar, singing, or writing songs, a trait he seems to get from his father.
- In Touch with His Feminine Side: The most sensitive of the three boys in the family.
- Nice Guy: Along with Georgie, one of the nicest kids in the family.
- Pretty Boy
Lewie and Beast Diaz
Lewie: Nicolas Bechtel
Beast: Malachai Barton
- Annoying Younger Sibling: To most of the older kids. Most prominently when they are separated, but also occasionally shows up when they team up together.
- Bratty Half-Pint: Both boys can be pretty bratty, although they are rarely as actively malicious as Daphne.
- Cheerful Child: Both kids are pretty happy most of the time.
- Keet: Both boys are very much upbeat.
- Those Two Guys: They're almost always seen together.
Daphne Diaz
Played by: Ariana Greenblatt
The youngest of the seven children.
- Annoying Younger Sibling
- The Baby of the Bunch
- Bratty Half-Pint: Likes to get Harley in trouble and tends to be a bit annoying to the other older kids as well.
- Companion Cube: Her rather creepy and messy doll named Deathnee.
- Creepy Child
- Disproportionate Retribution: If you intend to take something from Daphne, always ask permission first!
- Harley's dinner ended up splattered over the floor when she took one French fry and the plate it was on shattered.
- In retaliation for Georgie and Ethan sneaking the tv remote away, Daphne sneaked into a barricaded room and shaved their eyebrows off while they slept.
- Elmuh Fudd Syndwome: Cannot pronounce her R's, a trait especially prominent in season 1.
- Freudian Excuse: Part of her reasons for getting Harley into trouble so often is that she misses hanging out with her big sister, whom she appears to have been quite close to when they were younger.
- Messy Hair: Nearly always has multiple hair accessories, and her hair never looks brushed.
- Tomboy with a Girly Streak: Loves pink and dolls, but also hates wearing dresses while loving to get dirty with her older brothers.
Suzy Diaz
Played by: Cerina Vincent
The mother of the Diaz family.
- Amazingly Embarrassing Parents: Towards all of her children, surprisingly.
- Good Parents: She and Tom are this towards all of the children, but especially Harley.
- Mama Bear: At times.
- Team Mom
- The Perfectionist: Not as much as her neighbor Bethany, though.
Tom Diaz
Played by: Joe Nieves
The father of the Diaz family.
- Bumbling Dad
- Dads Can't Cook
- Dreadful Musician: Very.
- Good Parents
- Papa Wolf: He thinks of himself as a cool dad, though his three older daughters tend to disagree. He does protect them often though.
Bethany Peters
Played by: Lauren Pritchard
The Diaz family's selfish and mean next-door neighbor who loathes the family.
- Always Someone Better: How she compares herself to the Diaz family.
- Bitch in Sheep's Clothing: Briefly appears to be educated, worldly, and refined when she meets people. It turns out to be a mask for her true nature as a haughty, cunning, and lazy control freak.
- Control Freak
- Fat Bitch: Until her weight loss (the "bitch" part still stands)
- Formerly Fat: With her actress losing weight, she becomes visibly thinner each season.
- It's All About Me: She's extremely selfish.
- Jerkass
- Large and in Charge: A (formerly) fat woman who thinks she's superior to everyone and gains positions of power in the neighborhood.
- Manipulative Bitch: More than content to put the Diaz family up against one another or even take advantage of her own daughter to frame them.
- My Beloved Smother: Averted. Ellie doesn't love her at all. She's slightly less controlling towards her nephew once he lives with her.
- Nosy Neighbor: She's very domineering towards the neighbors, especially Suzy and Tom because she criticizes their parenting.
- The Perfectionist
- Privileged Rival: To Suzy.
Ellie Peters
Played by: Lulu Lambros
Harley Diaz's best friend
- Hair of Gold, Heart of Gold
- Nervous Wreck: As a result of her mother's parenting style.
- Nice Girl
- Put on a Bus: Leaves for boarding school at the end of season 2.
Aidan Peters
Harley Diaz's nemesis, ironically enough the cousin of her best friend.
- Cousin Oliver: Seems to be a replacement for his cousin Ellie.
- Jerk Jock: Plays lacrosse.
- Jerk with a Heart of Gold: Initially seems quite selfish, but he is eventually revealed to be relatively kind-hearted.
- Parental Neglect: Lives with his aunt instead of his parents; his mom is never mentioned, while his dad never visits, despite repeated promises to.
