The WORST episodes of Monsters vs. Aliens

Every episode of Monsters vs. Aliens ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of Monsters vs. Aliens!

Inspired by DreamWorks Animation's 2009 blockbuster feature film, this new series follows the further adventures of the beloved monsters- B.O.B., the gelatinous blob without a brain; Link, the prehistoric fish-man; Dr. Cockroach, the half-man/half-insect mad scientist; and Susan (aka Ginormica), the incredible growing woman-as they learn to adapt to a new world filled with bizarre aliens.

Last Updated: 11/14/2024Network: NickelodeonStatus: Ended
You Can't Breathe in a Diner in Space!
star
6.33
3 votes

#1 - You Can't Breathe in a Diner in Space!

Season 1 - Episode 45 - Aired 1/25/2014

Dr. Cockroach accidentally teleports the diner into space.

Directors: Matt Engstrom
Watch Now:Amazon
The Invisible Threat! (Also Silent)
star
6.75
4 votes

#2 - The Invisible Threat! (Also Silent)

Season 1 - Episode 50 - Aired 2/8/2014

A metal robot battles with the monsters and aliens.

Directors: Fred Osmond
Writer: Frank Rocco
Watch Now:Amazon
The Friend Who Wasn't There
star
6.88
8 votes

#3 - The Friend Who Wasn't There

Season 1 - Episode 28 - Aired 10/26/2013

Link pursues Sta'abi using a pheromone spray.

Directors: Matt Engstrom
Writer: Kim Duran
Watch Now:Amazon
Bride of the Internet
star
7.00
3 votes

#4 - Bride of the Internet

Season 1 - Episode 49 - Aired 2/8/2014

Susan tries to escape the Internet.

Directors: Matt Engstrom
Watch Now:Amazon
The Grade that Wouldn't Pass!
star
7.33
3 votes

#5 - The Grade that Wouldn't Pass!

Season 1 - Episode 44 - Aired 1/18/2014

After Dr. C tampers with Sqweep's project, the alien receives a bad grade.

Directors: Fred Osmond
Watch Now:Amazon
It Came From Channel 5
star
7.40
5 votes

#6 - It Came From Channel 5

Season 1 - Episode 39 - Aired 12/7/2013

When Derek returns, strange secrets begin to unfold.

Directors: Jim Schumann
Writer: Mark Palmer
Watch Now:Amazon
Ginormicat!
star
7.43
7 votes

#7 - Ginormicat!

Season 1 - Episode 37 - Aired 11/30/2013

A stray kitten makes its way to the base and obtains Susan's ginormica powers.

Directors: Matt Engstrom
Watch Now:Amazon
It Spoke With Authority
star
7.50
4 votes

#8 - It Spoke With Authority

Season 1 - Episode 42 - Aired 1/4/2014

Dr. Cockroach creates a spray to give the president more authority.

Directors: Matt Engstrom
Watch Now:Amazon
Welcome to Area Fifty-Something
star
7.56
366 votes

#9 - Welcome to Area Fifty-Something

Season 1 - Episode 1 - Aired 3/23/2013

All is well at Area Fifty-Something with Team Monster, until a lone alien imprisons the President and makes a permanent home on base.

Watch Now:AmazonApple TV
The Toy From Another World
star
7.63
67 votes

#10 - The Toy From Another World

Season 1 - Episode 3 - Aired 4/13/2013

The Monsters snoop in Coverton's quarters, where they find his "cuddle bear", which then attacks everyone on B.O.B.'s commands.

Directors: Sunil Hall
Watch Now:AmazonApple TV
The Mystery of Dr. Cutter
star
7.67
3 votes

#11 - The Mystery of Dr. Cutter

Season 1 - Episode 35 - Aired 11/23/2013

Dr. Cutter arrives to update the base's technology.

Directors: Matt Engstrom
Watch Now:Amazon
It Ruled With an Iron Fist
star
7.67
3 votes

#12 - It Ruled With an Iron Fist

Season 1 - Episode 40 - Aired 12/7/2013

The monsters and the aliens are introduced to Rule-Bot when Monger goes away for the weekend.

Directors: Jim Schumann
Watch Now:Amazon
This Ball Must Be Dodged
star
7.75
4 votes

#13 - This Ball Must Be Dodged

Season 1 - Episode 41 - Aired 1/4/2014

Monger gathers everyone for a game of dodge ball.

Directors: Fred Osmond
Watch Now:Amazon
The Bath Effect
star
7.76
153 votes

#14 - The Bath Effect

Season 1 - Episode 4 - Aired 4/20/2013

Susan makes B.O.B. think that baths cure crankiness. Unfortunately, it leads B.O.B. to try to cure everyone at the base of crankiness leaps into action, including Coverton.

Directors: Eddie Trigueros
Watch Now:AmazonApple TV
Danger Wears a Diaper
star
7.85
225 votes

#15 - Danger Wears a Diaper

Season 1 - Episode 2 - Aired 4/13/2013

The president's birthday is here! Dr. Cockroach has made him a gadget that will make him appear younger, but instead blasts him to infanthood.

Directors: Matt Engstorm
Writer: Kim Duran
Watch Now:AmazonApple TV
The Fruit of All Evil
star
7.86
114 votes

#16 - The Fruit of All Evil

Season 1 - Episode 5 - Aired 4/20/2013

Link accidentally eats the gelatin that B.O.B. calls his "girlfriend", leading the gang to figure out how to break the news to him.

Directors: Matt Engstorm
Watch Now:AmazonApple TV
Race to the End...Zone!
star
8.00
2 votes

#17 - Race to the End...Zone!

Season 1 - Episode 46 - Aired 1/25/2014

Link is disappointed when he can not play in the government football game.

Directors: Matt Engstrom
Watch Now:Amazon
My Monster, My Master
star
8.00
3 votes

#18 - My Monster, My Master

Season 1 - Episode 38 - Aired 11/30/2013

Sta'abi recruits Bob to teach her the art of combat.

Watch Now:Amazon
I Predict Horror
star
8.00
5 votes

#19 - I Predict Horror

Season 1 - Episode 33 - Aired 11/16/2013

B.O.B. eats Dr. C's ``probabilitator'' and foresees Coverton with a crown.

Directors: Matt Engstrom
Watch Now:Amazon
Frenemy Mine
star
8.11
82 votes

#20 - Frenemy Mine

Season 1 - Episode 6 - Aired 4/27/2013

B.O.B. is determined to have Coverton be his emergency buddy. Instead, Coverton chooses to manipulate B.O.B. to help him steal a death ray.

Directors: Matt Engstorm
Watch Now:AmazonApple TV
When Luck Runs Out
star
8.25
4 votes

#21 - When Luck Runs Out

Season 1 - Episode 47 - Aired 2/1/2014

A leprechaun joins team Monster.

Directors: Sunil Hall
Watch Now:Amazon
Maximum B.O.B.
star
8.26
109 votes

#22 - Maximum B.O.B.

Season 1 - Episode 7 - Aired 4/27/2013

Impressed with B.O.B.'s indestructibleness, Coverton decides to clone a piece of him. After too many clones, B.O.B. alarmingly begins to diminish little by little.

Directors: Sunil Hall
Watch Now:AmazonApple TV
Vornicarn
star
8.30
80 votes

#23 - Vornicarn

Season 1 - Episode 18 - Aired 9/14/2013

A new alien arrives on Earth searching for a vicious beast, and soon others look for him as well.

Directors: Sunil Hall
Watch Now:Amazon
The Sorry Syndrome
star
8.32
72 votes

#24 - The Sorry Syndrome

Season 1 - Episode 21 - Aired 10/5/2013

Susan spills some food on Sta'abi and says she's sorry, but Sta'abi is insulted.

Directors: Matt Engstrom
Writer: Kim Duran
Watch Now:Amazon
98 Pound Cockroach
star
8.32
75 votes

#25 - 98 Pound Cockroach

Season 1 - Episode 16 - Aired 6/22/2013

Dr. Cockroach gets stronger, but his intellect weakens.

Directors: Sunil Hall
Writer: Mark Palmer
Watch Now:Amazon