The BEST episodes of Lab Rats (2012) season 4

Every episode of Lab Rats (2012) season 4, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Lab Rats (2012) season 4!

Leo is an ordinary teenager who has moved into a high-tech "smart'' house with his mother, inventor stepfather and Eddy, the computer that runs the house. Leo's life becomes less ordinary when, one day, he discovers a secret underground lab that houses three experiments: superhuman teenagers. The trio -- Adam, the strong one, Bree, the fast one and Chase, the smart one -- convinces Leo and his parents to let them leave their lab and join Leo at school, where they try to fit in while having to manage their unpredictable bionic strengths. As Leo figures out a way to keep his new pals' bionic abilities a secret, they help him build self-confidence.

Last Updated: 3/30/2024Network: Disney XDStatus: Ended
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Bionic Dog
star
8.11
55 votes

#1 - Bionic Dog

Season 4 - Episode 5 - Aired 4/8/2015

When Douglas' long lost dog, Otis, shows up on the island, Chase becomes severely allergic and Adam instantly bonds with him.

Directors: Guy Distad
Writer: Mark Brazill
Watch Now:AmazonApple TV
Under Siege
star
8.11
56 votes

#2 - Under Siege

Season 4 - Episode 4 - Aired 4/1/2015

When a series of suspicious events happen overnight at the academy, everyone is convinced a new threat has emerged.

Directors: Victor Gonzalez
Watch Now:AmazonApple TV
Space Colony (2)
star
8.06
31 votes

#3 - Space Colony (2)

Season 4 - Episode 24 - Aired 1/20/2016

Krane's evil cohort, Dr. Gao, reveals their plan to wipe out and replace Earth's population with a bionic civilization.

Watch Now:Amazon
Bionic Rebellion (1)
star
8.05
56 votes

#4 - Bionic Rebellion (1)

Season 4 - Episode 1 - Aired 3/18/2015

Chase, Adam, Bree and Leo discover that a confidante has secretly formed an evil rebellion to exact revenge for his father's death by killing Davenport, leading to a bionic battle of good versus evil. Meanwhile, Leo is quick to tell all of the other students that he is not "one of them" while bragging about living with Adam, Bree and Chase in their high-tech quarters, which quickly comes back to haunt him.

Directors: Guy Distad
Watch Now:AmazonApple TV
Bionic Action Hero (1)
star
7.98
46 votes

#5 - Bionic Action Hero (1)

Season 4 - Episode 13 - Aired 8/5/2015

Douglas reveals that a former colleague is a movie director who wants to make a movie based on Adam, Bree and Chase; when the director shows up to the Academy with her actor, Troy West, for research, her evil agenda begins to unfold.

Directors: Victor Gonzalez
Watch Now:Amazon
Mission Mania
star
7.97
59 votes

#6 - Mission Mania

Season 4 - Episode 6 - Aired 4/15/2015

Feeling left out when no one recognizes him as the fourth member of the bionic team, Leo does his own self-promotion, resulting in more mission alerts than the team can handle.

Watch Now:AmazonApple TV
Spike vs. Spikette
star
7.91
45 votes

#7 - Spike vs. Spikette

Season 4 - Episode 10 - Aired 7/15/2015

Bree and Chase discover that a female bionic student has a commando app like Chase and she starts terrorizing the academy.

Directors: Victor Gonzalez
Writer: Jason Dorris
Watch Now:AmazonApple TV
Simulation Manipulation
star
7.66
41 votes

#8 - Simulation Manipulation

Season 4 - Episode 7 - Aired 4/22/2015

Adam and Chase each lead their student groups against each other in a series of simulated exercises that will evaluate both student and mentor performance.

Directors: Victor Gonzalez
Watch Now:AmazonApple TV
Space Colony (1)
star
7.65
31 votes

#9 - Space Colony (1)

Season 4 - Episode 23 - Aired 1/20/2016

Donald takes everyone for a visit to "Davenportia," the first human space colony located on a remote planet in another galaxy.

Watch Now:Amazon
Ultimate Tailgate Challenge
star
7.63
30 votes

#10 - Ultimate Tailgate Challenge

Season 4 - Episode 21 - Aired 12/2/2015

When Tasha gets everyone except Perry tickets to the big game, Perry goes crazy and destroys the tickets.

Directors: Guy Distad
Watch Now:Amazon
On the Edge (1)
star
7.58
36 votes

#11 - On the Edge (1)

Season 4 - Episode 19 - Aired 11/11/2015

While trying to prove his worth before his bionic step-siblings, Leo permanently injures a teammate, all because the U.S. President overlooked him for an upcoming team award.

Watch Now:Amazon
Bob Zombie
star
7.57
35 votes

#12 - Bob Zombie

Season 4 - Episode 16 - Aired 9/30/2015

Douglas develops a new piece of technology replicating Chase's bionic intelligence and gives it to some of the other academy students, including Bob.

Directors: Guy Distad
Watch Now:Amazon
Spider Island
star
7.56
50 votes

#13 - Spider Island

Season 4 - Episode 9 - Aired 7/8/2015

Douglas and Chase work together to reanimate an extinct species of sea spider but the spider escapes and puts the entire academy in jeopardy.

Directors: Hal Sparks
Watch Now:AmazonApple TV
Bionic Rebellion (2)
star
7.55
42 votes

#14 - Bionic Rebellion (2)

Season 4 - Episode 2 - Aired 3/18/2015

Directors: Guy Distad
Watch Now:AmazonApple TV
Left Behind
star
7.52
50 votes

#15 - Left Behind

Season 4 - Episode 3 - Aired 3/25/2015

After sneaking a group of their bionic students off the island, Adam, Bree and Chase accidentally leave Spin and Bob behind and scramble to retrieve them before Davenport finds out.

Directors: Hal Sparks
Watch Now:AmazonApple TV
Forbidden Hero
star
7.49
47 votes

#16 - Forbidden Hero

Season 4 - Episode 8 - Aired 7/1/2015

Leo is injured during a mission and Tasha takes care of him, realizing the danger he puts himself in.

Directors: Victor Gonzalez
Writer: Steve Joe
Watch Now:AmazonApple TV
On the Edge (2)
star
7.48
29 votes

#17 - On the Edge (2)

Season 4 - Episode 20 - Aired 11/11/2015

Racked with guilt over blinding a teammate, Leo moves back to Mission Creek, but his self-exile ends when his family finds itself in extreme danger.

Watch Now:Amazon
Human Eddy
star
7.47
38 votes

#18 - Human Eddy

Season 4 - Episode 17 - Aired 10/14/2015

Davenport gives Eddy a synthetic human body.

Directors: Victor Gonzalez
Watch Now:Amazon
Bionic Action Hero (2)
star
7.46
26 votes

#19 - Bionic Action Hero (2)

Season 4 - Episode 14 - Aired 8/5/2015

Directors: Victor Gonzalez
Watch Now:Amazon
And Then There Were Four
star
7.45
42 votes

#20 - And Then There Were Four

Season 4 - Episode 22 - Aired 1/13/2016

Everyone is shocked when Douglas introduces a fourth bionic sibling named Daniel who’s been living a normal life with an adopted family.

Directors: Victor Gonzalez
Watch Now:Amazon
Lab Rats vs. Mighty Med (1)
star
7.29
52 votes

#21 - Lab Rats vs. Mighty Med (1)

Season 4 - Episode 11 - Aired 7/22/2015

When Chase and Davenport create a groundbreaking energy source with a new piece of technology, the Incapacitator from “Mighty Med” tricks Chase into thinking he’s a potential buyer and takes off with the device. This crossover continues on Mighty Med S02E17.

Directors: Rich Correll
Watch Now:AmazonApple TV
Space Elevator
star
7.28
32 votes

#22 - Space Elevator

Season 4 - Episode 12 - Aired 7/29/2015

Davenport’s top scientist Dr. Ryan arrives at the academy to test his latest advance in space technology. Chase is immediately threatened by his young surfer dude demeanor and their rivalry heats up when Chase is forced to work as Dr. Ryan’s assistant.

Directors: Hal Sparks
Watch Now:AmazonApple TV
The Curse of the Screaming Skull
star
7.21
34 votes

#23 - The Curse of the Screaming Skull

Season 4 - Episode 18 - Aired 10/21/2015

Principal Perry brings back a skull from a neighboring island and everyone is convinced that it's cursed.

Directors: Victor Gonzalez
Watch Now:Amazon
One of Us
star
7.04
28 votes

#24 - One of Us

Season 4 - Episode 15 - Aired 8/12/2015

Chase and Douglas discover that Krane implanted the bionic students with a deadly virus.

Directors: Guy Distad
Watch Now:Amazon
The Vanishing (2)
star
4.00
2 votes

#25 - The Vanishing (2)

Season 4 - Episode 26 - Aired 2/3/2016

Directors: Victor Gonzalez
Watch Now:Amazon