Skip to content
Streambay
The Thundermans: Undercover poster
TV series

The Thundermans: Undercover

Latest episode

S1 E26 · The Most Thunderful Time of the Year

About The Thundermans: Undercover

The Thundermans: Undercover is a kids and sci-fi & fantasy TV series that premiered on Nickelodeon on January 22, 2025. It has 1 season and 26 episodes so far and is still airing new episodes. The latest episode, Season 1 Episode 26 "The Most Thunderful Time of the Year", aired on December 17, 2025.

Twins Phoebe and Max Thunderman embark on a mission to alleviate the threat in the seaside town of Secret Shores, as well as helping Chloe develop her superhero abilities by bringing her along on their undercover mission. Chloe forms a bond with two classmates while they investigate suspicious activity coming from the local school, who don’t realize their new friend has secret powers. As the danger increases, the Thunderman trio must stay in town indefinitely, leaving the squabbling twins in charge of raising their younger sister.

  • Kids
  • Sci-Fi & Fantasy
  • Action & Adventure

Last updated

Episodes

26 episodes · 2 seasons

Season 1

2025 · 26 episodes · Last episode: 10 months ago

The Thundermans: Undercover Season 1 release dates →
  1. The Thundermans: Undercover S1 E26 still E26

    26. The Most Thunderful Time of the Year

    Phoebe and Max tell holiday stories to compete in the Thundermans Story Slam, but it's Chloe's story that makes them understand the meaning of the holiday.

  2. The Thundermans: Undercover S1 E25 still E25

    25. The Mastermind Unmasked: Part 2

    When The Mastermind forces Chloe to steal a magical amulet that grants him superhero powers, the Thundermans unite to stop his plan. Chloe must reveal her identity to save her friends.

  3. The Thundermans: Undercover S1 E24 still E24

    24. The Mastermind Unmasked: Part 1

    Max and Phoebe discover that Lazlo Chance may be the evil Mastermind and enlist Chloe to help, but Chloe is torn between her head and her heart.

  4. The Thundermans: Undercover S1 E23 still E23

    23. Party All the Crime

    Chloe's birthday party is cancelled and Max and Phoebe compete to throw her a new one; Max's time-stopping birthday gift falls into the wrong hands.

  5. The Thundermans: Undercover S1 E22 still E22

    22. She's All Splat

    With Cherry working at Splat by Sea, Max gets her into a fake dating scheme to obtain discounts at the restaurant; Chloe faces a tough choice.

  6. The Thundermans: Undercover S1 E21 still E21

    21. Love Is in the Lair

    Mrs. Wong visits Secret Shores, and threatens to reveal the Thundermans' superhero identities to the town. But Max and Phoebe's plan to have Dr. Colosso keep her quiet backfires in ways they could not have imagined.

  7. The Thundermans: Undercover S1 E20 still E20

    20. The Max of Life

    Max misses being famous and having fans, so he decides to break Booch's sandwich-stacking record to be famous again. Chloe rallies behind Bootch so that she can take back her record.

  8. The Thundermans: Undercover S1 E19 still E19

    19. Endless Summer

    Max pretends to turn evil to infiltrate Mastermind's henchmen and steal the Chip-Chucker, a device that previously turned him evil.

  9. The Thundermans: Undercover S1 E18 still E18

    18. Cruel Summer

    Max flees from Phoebe and Captain Perfect to prove his innocence when he is wrongly accused of committing a crime.

  10. The Thundermans: Undercover S1 E17 still E17

    17. A Midsummer Knight's Scheme

    Captain Perfect's younger sister, Penny, is headed down the path of becoming a supervillain. Eager to impress Captain Perfect, Max takes it upon himself to guide her toward a better path.

  11. The Thundermans: Undercover S1 E16 still E16

    16. The Summer I Turned Giddy

    Upset that Phoebe secretly partnered with Captain Perfect, Max decides to have a new superhero partner, his best friend Gideon. But things go wrong when Max tries to make Gideon a better superhero.

  12. The Thundermans: Undercover S1 E15 still E15

    15. I Know What You Did This Summer

    B.C. invites Chloe to a launch party, and at the same time Jinx and Booch invite Chloe to protest outside the party. Not wanting to hurt anyone's feelings Chloe tries to do both. Phoebe is keeping her working with Captain Perfect a secret from Max.

  13. The Thundermans: Undercover S1 E14 still E14

    14. Summer of Secrets

    Chloe has been missing school by going on missions with her siblings. She now has to go to summer school to catch up on everything she has missed. Max, acting as the substitute for summer school, has a new student who agrees to tutor her.

  14. The Thundermans: Undercover S1 E13 still E13

    13. From Dust Till Dawn

    Chloe doesn't want to learn leadership skills. But when a villain attacks her field trip trying to steal a space geode, Max and Phoebe have to put Chloe in charge while they try to take down the villain and defuse his dangerous astronomical weapon.

  15. The Thundermans: Undercover S1 E12 still E12

    12. Prank You, Next

    After Max is targeted by a mystery prankster at school, he seeks help from Principal Bradford. But Max fails to stop the pranks and quits the mission in embarrassment, prompting Chloe to confess that she was the prankster all along.

  16. The Thundermans: Undercover S1 E11 still E11

    11. Tide and Prejudice

    The former protector of Secret Shores arrives at the Thundermans' beach house and reclaims it as his home. Phoebe, Max, and Chloe try to reason with him, but when a protest at the school goes wrong, the former hero proves more harmful than helpful.

  17. The Thundermans: Undercover S1 E10 still E10

    10. All About Steve

    Billy arrives, hopeful that his new sidekick Steve can join the T-Force. Phoebe and Max consider it, but soon discover that his superpower is making marshmallows. After they reject Steve's bid to join the team, he turns evil and vows revenge.

  18. The Thundermans: Undercover S1 E9 still E9

    9. No Friend in Sight

    Chloe feels smothered by Max and Phoebe, and encourages them to make new friends. However, the twins unwittingly make the same friend, and begin a battle for the ages over her. Chloe's new alone time is interrupted by living room-crashing pelican.

  19. The Thundermans: Undercover S1 E8 still E8

    8. For Your Spies Only

    Max and Phoebe attend Parent-Teacher Night, leaving Chloe to have friends over without adult supervision. Jinx finds the Air Lair and believes spies are targeting the school, and his meddling puts Max and Phoebe's school jobs at risk.

  20. The Thundermans: Undercover S1 E7 still E7

    7. Not So Fast and Furious

    A new super-fast villain is wreaking havoc in Secret Shores, and Billy is the only hope at tracking her down. After Billy's speed accidentally triggers an avalanche, however, he decides to hang up his cape and retire from being a superhero.

  21. The Thundermans: Undercover S1 E6 still E6

    6. Cherry Bad Things

    Cherry visits and Max discovers Phoebe never took her sparkle power away. Phoebe promises to do so and has a girls' night with Cherry while Max hosts Jinx. Colosso gets jealous, and Cherry's powers malfunction, nearly blowing Phoebe's cover.

  22. The Thundermans: Undercover S1 E5 still E5

    5. Save the Date

    Max bets Phoebe she can't turn off being a superhero and go on a normal date. Chloe helps Phoebe do well on the date, but Max tries to sabotage by crying wolf. Suddenly, a real supervillain emerges and puts Max and Chloe in serious danger.

  23. The Thundermans: Undercover S1 E4 still E4

    4. The Parent Zap

    After Phoebe and Max let Chloe's friends watch a horror movie and eat candy, Jinx and Booch's parents want to meet Chloe's. With Hank and Barb away, Max and Phoebe transform into them to help Chloe. It goes well until the real Hank and Barb show up.

  24. The Thundermans: Undercover S1 E3 still E3

    3. Bummer School

    Chloe, Jinx, and Booch are designing a school mascot, but Max and Phoebe's feud over their jobs ruins the project. Chloe reads them the riot act, and the twins realize their twin-fighting affects Chloe now that they're guardians.

  25. The Thundermans: Undercover S1 E2 still E2

    2. Faulty Powers

    A training accident makes Chloe's powers faulty. Max tries to cure her and gets a misleading positive result, so she goes to a party. But his treatment actually creates brand new powers Chloe can't control, so the twins have to get her out!

  26. The Thundermans: Undercover S1 E1 still E1

    1. Thundercover

    Max and Phoebe bring Chloe on an undercover mission in a new town, so she can experience life as a normal kid.

Cast & crew

Created by Jed Spingarn

  • Audrey Whitby

    Audrey Whitby

    Cherry

  • Wei Chung

    Wei Chung

    Trey

  • Tony Alcantar

    Tony Alcantar

    Brain Freeze

  • Chris Tallman

    Chris Tallman

    Hank Thunderman

  • Rosa Blasi

    Rosa Blasi

    Barb Thunderman

  • Lilimar

    Lilimar

    Kitty Klaw

  • Diego Velazquez

    Diego Velazquez

    Billy Thunderman

  • Jessica Marie Garcia

    Jessica Marie Garcia

    Brenda

  • Casey Trotter

    Casey Trotter

    Bob

  • Ryan Ochoa

    Ryan Ochoa

    Malware

  • Nikolai Witschl

    Nikolai Witschl

    The Mastermind

  • Mela Pietropaolo

    Mela Pietropaolo

    Blair

  • Ivory Baker

    Ivory Baker

    Tiff

  • Daniele Gaither

    Daniele Gaither

    President Kickbutt

  • Gabrielle Nevaeh

    Gabrielle Nevaeh

    Kiefer

  • Ajay Banks

    Ajay Banks

    Professor Portal

The Thundermans: Undercover FAQ

When is the next episode of The Thundermans: Undercover?

A date for the next episode of The Thundermans: Undercover hasn't been announced yet. Follow The Thundermans: Undercover in the Streambay app and you'll be notified as soon as a new episode airs.

When did the latest episode of The Thundermans: Undercover come out?

The most recent episode of The Thundermans: Undercover, Season 1 Episode 26 "The Most Thunderful Time of the Year", aired on December 17, 2025.

How many seasons of The Thundermans: Undercover are there?

The Thundermans: Undercover has 1 season with 26 episodes in total.

When did The Thundermans: Undercover first air?

The Thundermans: Undercover first aired on Nickelodeon on January 22, 2025.

How do I get notified when new episodes of The Thundermans: Undercover are released?

Download the Streambay app, follow The Thundermans: Undercover, and you'll get a push notification the moment each new episode is released.

More like The Thundermans: Undercover

  • Teenage Mutant Ninja Turtles poster

    8.3

    S5 · E20 8 years ago

    Teenage Mutant Ninja Turtles

    Synopsis: The Teenage Mutant Ninja Turtles are back in an all-new animated series on Nickelodeon! Surfacing topside for the first time on their fifteenth birthday, the titular turtles, Leonardo, Michelangelo, Raphael and Donatello, find that life out of the sewers isn't exactly what they thought it would be. Now the turtles must work together as a team to take on new enemies that arise to take over New York City.

  • Ninjago: Masters of Spinjitzu poster

    8.0

    S16 · E30 4 years ago

    Ninjago: Masters of Spinjitzu

    Synopsis: When the fate of their world, Ninjago, is challenged by great threats, it's up to the ninja: Kai, Jay, Cole, Zane, Lloyd and Nya to save the world.

  • GG Bond poster

    8.1

    S43 · E1 10 months ago

    GG Bond

  • Pleasant Goat and Big Big Wolf poster

    7.4

    S1 · E213 21 years ago

    Pleasant Goat and Big Big Wolf

    Synopsis: Pleasant Goat and Big Big Wolf is a Chinese animated television series which was created by Huang Weiming, Lin Yuting and Luo Yinggeng, and produced by Creative Power Entertaining. The show is about a group of goats living on the Green Pasture, Qing Qing Grasslands/Plains, and the story revolving around a clumsy wolf who wants to eat them. Toon Express Group owns the copyrights of the characters.

  • Kid vs. Kat poster

    7.9

    S2 · E52 14 years ago

    Kid vs. Kat

    Synopsis: Ten-year-old Coop Burtonburger's life takes a turn for the worse when his little sister, Millie, brings home a mysterious stray cat who, in reality, is an evil cybernetic alien in disguise. To make matters worse, neither his family nor anyone else believes him, except for his best friend, Dennis. Now, Coop risks his life every day as he attempts to foil the cat's diabolical schemes and prove to the world that the family pet is an evil mastermind.

  • The Adventures of Jimmy Neutron: Boy Genius poster

    7.4

    S3 · E23 19 years ago

    The Adventures of Jimmy Neutron: Boy Genius

    Synopsis: Jimmy Neutron is the smartest kid in town. As a genius, Jimmy thinks most things can be solved with the invention of a new gizmo. But Jimmy usually takes the easy way out, and his backfiring gadgets result in comedic adventures.

  • Power Rangers poster

    7.1

    S30 · E10 3 years ago

    Power Rangers

    Synopsis: A team of teenagers with attitude are recruited to save Angel Grove from the evil witch, Rita Repulsa, and later, Lord Zedd, Emperor of all he sees, and their horde of monsters.

  • The Transformers poster

    7.9

    S4 · E3 39 years ago

    The Transformers

    Synopsis: The Transformers is the first animated television series in the Transformers franchise. The series depicts a war among giant robots that can transform into vehicles and other objects.

  • Lilo & Stitch: The Series poster

    7.4

    S2 · E28 20 years ago

    Lilo & Stitch: The Series

    Synopsis: This animated series chronicles the further adventures of renegade scientist Dr. Jumba Jookiba's beloved Experiment 626, who is now living happily as Lilo's alien buddy Stitch. Jumba’s remaining experiments have landed all over Hawaii in the form of dehydrated pods. Lilo and Stitch’s mission is to catch Stitch’s "cousins" before they fall into the clutches of the evil Dr. Jacques von Hamsterviel!

  • Mickey Mouse Clubhouse poster

    6.8

    S4 · E26 10 years ago

    Mickey Mouse Clubhouse

    Synopsis: Mickey and his friends Minnie, Donald, Pluto, Daisy, Goofy, Pete, Clarabelle and more go on fun and educational adventures.

  • Winx Club poster

    8.0

    S8 · E26 7 years ago

    Winx Club

    Synopsis: In a magical universe, witches, warriors begin fighting in the name of good .vs. evil! At a magic school, five teenage girls are selected to defend the universe with their magic.

Never miss The Thundermans: Undercover.

Download Streambay and follow The Thundermans: Undercover. We’ll notify you the moment a new episode is released. It’s free, with no sign-up and no personal information required.

Coming soon to App Store Get it on Google Play
The Thundermans: Undercover Get new episode alerts Get alerts