Gender: Female
Friends and Family
Amanda Lopez
Melissa Chase
Behind the Scenes
First Appearance:
  "Going the Extra Milo"
Voiced by:
Alyson Stoner

Lydia is a student of Jefferson County Middle School and one of Milo's classmates. She's an enthusiastic person and a loyal friend.

She is voiced by Alyson Stoner.


Lydia is a very cheerful, energetic person who does everything with boundless enthusiasm. She seems to enjoy being on the go, having invited Melissa to the mall, and, as a passionate member of the school drama club, spending her afternoons rehearsing with the other members.

She is loyal to a fault - a trait that can be seen when she follows Amanda's exact instructions via text, claiming that finishing the instructions in texts sent by Amanda was just what she did.

Physical Appearance

Lydia has light skin, dark brown eyes, and a very small, pointed nose. She has long brown hair that's held back by a light yellow headband, and she wears a similarly colored dress with dark orange, plaid patterned sleeves, and a matching skirt with a brown belt. Her shoes are light brown sneakers with white laces, soles, and socks.


In Going the Extra Milo, she was in the back of the classroom when Milo and Zack are teleported to school by aliens.

In Sunny Side Up, she was in the hall when Zack and Melissa are trying to get their science project to class in one piece.

In Rooting for the Enemy, she attended the football game against the Tigers.

In Party of Peril, she was in the hall when Milo is splashed by the water fountain.

In Murphy's Lard, she visited Lard World with Chad.

In Athledecamathalon, she was in the hallway when she fell in the domino effect after someone drank from the water fountain.

In The Substitute, She sent Melissa a message about checking out a new mall after school. Cavendish and Dakota saw this message when they accidentally picked up Melissa's phone instead of their Quantum Localizer.

In School Dance, she had fun for Amanda until Amanda took over. She also revealed to Amanda that it was Milo who saved the dance for her.

In Battle of the Bands, she was in the audience with Amanda and enjoyed herself after Murphy's Law floods the parking lot.

In The Math Book, she appeared with two other members of the drama club rehearsing for a play. She was playing Pantalone, the greedy Venetian merchant.

In The Little Engine That Couldn't, she attended the Fire Engine Museum after Milo, Melissa, and Melissa's dad drove an out of control antique fire engine through the natural history museum and collided with the life-size Tyrannosaurus rex statue.

In Disaster of My Dreams, she was in the hallway and later in chemistry class while Elliot kept a boulder from destroying the school.

In A Clockwork Origin, she attended a V-tech demo.

In Some Like it Yacht, she attended a school trip to the S.S. Indulgence with the rest of her class and got stranded on an island for about an hour before riding a wave back to America's mainland.

In World Without Milo, she appeared outside the school near Elliot.

In Snow Way Out, she is seen sitting in the back of the class.

In Teacher Feature, she is seen in the back of the class.

In Cake 'Splosion!, she is in the gym when it is announced Cake 'Splosion is looking for contestants at school.

In Managing Murphy's Law, she and Chad are tasked by Amanda to be roadies first Just Getting Started.

In Milo's Shadow, she is seen in chemistry when the giant baseball goes rampaging through the school. She is later seen in another class watching Doofenshmirtz dance.


Amanda Lopez

Lydia appears to be close friends with Amanda, and the two often spend time together outside of class. Amanda trusted Lydia to have fun for her when she was too busy, and Lydia gave it her all, dancing and enjoying herself throughout most of the school dance. When Amanda approached her with Milo's shoe, Lydia was quick to point out the owner for her. The two of them sat next to each other during the Battle of the Bands and continue to have fun together as Murphy's law causes the event to flood.

After receiving a text from Amanda to bring supplies for a band performance, Lydia did so immediately, even stating that she blindly follows the instructions in Amanda's texts, claiming, 'It's What I do'.

Melissa Chase

Lydia is friends with Melissa. They have each other's cell phone numbers and Lydia once invited Melissa to the mall via video message.


The image gallery for "Lydia" may be viewed here.


“Hey Melissa. Let’s hit the new mall after school. I hear it’s totally steep.”

“Now you get to have fun!”
“I’ve got somebody covering that for me. Thanks, Lydia!”
“You're having so much fun!”
Milo, Amanda and Lydia[source]

“Amanda, come dance!”
“Can't. I have to find out whose shoe this is. Whoever it is, fixed all of this. He's my hero!”
“Well, that's obvious!”
Lydia and Amanda[source]

“We're doing commedia dell'arte. I'm Pantalone, the greedy Venetian merchant! Na! ”

“Amanda texted me and I just blindly followed her instructions. It's what I do.”

“AAAaaah! Scary Ponies!”


Season One

Season Two


v - e - d Characters
Milo MurphyMelissa ChaseZack Underwood
Balthazar CavendishVinnie DakotaDiogeeMartin MurphyBrigette MurphySara MurphyAmanda LopezMort SchaefferBradley NicholsonElliot DeckerHeinz DoofenshmirtzPerry the Platypus
Richard ChaseEileen UnderwoodMarcus UnderwoodChad Van CoffElizabeth MilderKyle DrakoMs. MurawskiNolan MitchellScottBrickSavannahMr. BlockOrton MahlsonLydiaJoniNealBob BlockFrancis Monogram
Families Murphy: Martin MurphyBrigette MurphySara MurphyMilo MurphyDiogeeJoey MurphyLaura MurphyNate MurphyGrandpa MurphyGrandma MurphySheriff MurphyMurphy Family
Underwood: Marcus UnderwoodEileen UnderwoodZack Underwood
Chase: Richard ChaseMelissa Chase
Jefferson County
Middle School
Students: Amanda LopezMort SchaefferBradley NicholsonChad Van CoffLydiaJoni
Staff: Elizabeth MilderKyle DrakoMs. MurawskiNolan MitchellMs. WhiteFredMr. HartoonianMs. Whipley
Bureau of
Time Travel
Mr. BlockGretchenBalthazar CavendishVinnie DakotaBrickSavannah
The Doctor
Zone Files
Show and Cast: Orton MahlsonDoctor ZoneTime Ape
Fans: KrisWallyJosh
Phineas and Ferb
Dr. DoofenshmirtzPerry the PlatypusMajor MonogramCarl KarlPhineas FlynnFerb FletcherCandace FlynnJeremy JohnsonBuford Van StommBaljeet TjinderIsabella Garcia-Shapiro
Antagonists Pistachions: King PistachionDerekGiant PistachionDennisJerryBrandiPistachions (in general)
Octalians: Alien CommanderAlien PilotLoabKhone
Other Antagonists: Sentient BlobVictor Verliezer
Kids and Teens: NealThe LumbermaxesMaxJackieBrulee twin sistersWendyLizzyLola SunderguardLola Sunderguard's Friends
Adults: Elliot DeckerScottVeronicaTobias TrollhammerClyde RickenbackerMr. BruleeMrs. BruleeMs. BaxterShelleyForemanDaveJavierSlashGretchen FlammkuchenPhillipGovernment AgentsJefferson G. CountyEuniceMayorCaptainSergio McGuinnessWilson
Misc: Lardee BoyC.I.D.D.AliensMinor Characters