The Thundermans: Undercover backdrop
The Thundermans: Undercover S1E19 — Endless Summer
9.5
The Thundermans: Undercover•Season 1•Episode 19

Endless Summer

9.5/10 · 88 votesJul 31, 202522 min

Ranked #1 of 26 in Season 1•+0.7 vs season avg

Discussion

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

Previous episodeE18 · Cruel SummerNext episodeE20 · The Max of Life
BestEpisodes
WorstEpisodes
BestSeasons
AllEpisodes

Seasons1

All1

Season 1 Episodes26

Thundercover stillE1 7.3

Thundercover

Faulty Powers stillE2 7.6

Faulty Powers

Bummer School stillE3 7.0

Bummer School

The Parent Zap stillE4 7.9

The Parent Zap

Save the Date stillE5 8.0

Save the Date

Cherry Bad Things stillE6 7.6

Cherry Bad Things

Not So Fast and Furious stillE7 7.6

Not So Fast and Furious

For Your Spies Only stillE8 9.3

For Your Spies Only

No Friend in Sight stillE9 9.2

No Friend in Sight

All About Steve stillE10 9.2

All About Steve

Tide and Prejudice stillE11 9.3

Tide and Prejudice

Prank You, Next stillE12 7.9

Prank You, Next

From Dust Till Dawn stillE13 9.3

From Dust Till Dawn

Summer of Secrets stillE14 9.2

Summer of Secrets

I Know What You Did This Summer stillE15 9.2

I Know What You Did This Summer

The Summer I Turned Giddy stillE16 9.1

The Summer I Turned Giddy

A Midsummer Knight's Scheme stillE17 9.2

A Midsummer Knight's Scheme

Cruel Summer stillE18 9.3

Cruel Summer

Endless Summer stillE19 9.5Now viewing

Endless Summer

The Max of Life stillE20 9.3

The Max of Life

Love Is in the Lair stillE21 9.4

Love Is in the Lair

She's All Splat stillE22 9.3

She's All Splat

Party All the Crime stillE23 9.3

Party All the Crime

The Mastermind Unmasked: Part 1 stillE24 9.4

The Mastermind Unmasked: Part 1

The Mastermind Unmasked: Part 2 stillE25 9.3

The Mastermind Unmasked: Part 2

The Most Thunderful Time of the Year stillE26 9.2

The Most Thunderful Time of the Year

Cast7

Kira Kosarin

Kira Kosarin

Phoebe Thunderman

Jack Griffo

Jack Griffo

Max Thunderman

Maya Le Clark

Maya Le Clark

Chloe Thunderman

N

Nathan Broxton

Jinx

K

Kinley Cunningham

Kombucha

Daran Norris

Daran Norris

Thunderford

Dana Snyder

Dana Snyder

Dr. Colosso

Discussion

0 comments

Join the conversation

Share your take and reply to other fans.

No comments yet

Be the first to share your thoughts on this episode.

Episode Summary

"Endless Summer" is episode 19 of The Thundermans: Undercover season 1. It scored 9.5/10 from 88 votes, ranking #1 of 26 episodes this season (season average 8.8). It aired on July 31, 2025.

Next: E20 · The Max of LifeBest of Season 1