Monsters vs. Aliens

The WORST episodes of Monsters vs. Aliens

Every episode ever - ranked by fan votes!

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: 6/8/2022Network: Nickelodeon
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The Friend Who Wasn't There
star
6.88
8 votes

#1 - 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
Watch Now:Amazon
Bride of the Internet
star
7.00
3 votes

#2 - 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 Invisible Threat! (Also Silent)
star
7.17
6 votes

#3 - 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
Watch Now:Amazon
You Can't Breathe in a Diner in Space!
star
7.25
4 votes

#4 - 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 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
Ginormicat!
star
7.38
8 votes

#6 - 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 Came From Channel 5
star
7.40
5 votes

#7 - It Came From Channel 5

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

When Derek returns, strange secrets begin to unfold.

Directors: Jim Schumann
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
7.58
385 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:AmazoniTunes
The Toy From Another World
star
7.72
76 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:AmazoniTunes
The Bath Effect
star
7.80
166 votes

#11 - 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:AmazoniTunes
Danger Wears a Diaper
star
7.88
239 votes

#12 - 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
Watch Now:AmazoniTunes
The Fruit of All Evil
star
7.92
125 votes

#13 - 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:AmazoniTunes
I Predict Horror
star
8.00
5 votes

#14 - 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
My Monster, My Master
star
8.00
3 votes

#15 - 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
Frenemy Mine
star
8.17
94 votes

#16 - 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:AmazoniTunes
This Ball Must Be Dodged
star
8.20
5 votes

#17 - 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
It Ruled With an Iron Fist
star
8.25
4 votes

#18 - 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
Maximum B.O.B.
star
8.26
115 votes

#19 - 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:AmazoniTunes
Vornicarn
star
8.32
85 votes

#20 - 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
75 votes

#21 - 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
Watch Now:Amazon
98 Pound Cockroach
star
8.35
79 votes

#22 - 98 Pound Cockroach

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

Dr. Cockroach gets stronger, but his intellect weakens.

Directors: Sunil Hall
Educational Television
star
8.38
81 votes

#23 - Educational Television

Season 1 - Episode 9 - Aired 5/4/2013

Link and B.O.B. accidentally launch a doomsday app.

Watch Now:AmazoniTunes
It Came...on a Field Trip
star
8.40
84 votes

#24 - It Came...on a Field Trip

Season 1 - Episode 8 - Aired 5/4/2013

Sensitive data could get exposed when the monsters encounter an alien in the woods.

Directors: Sunil Hall
Watch Now:AmazoniTunes
The Mystery of Dr. Cutter
star
8.60
5 votes

#25 - 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