The BEST episodes of Monsters vs. Aliens

Every episode of Monsters vs. Aliens ever, ranked from best to worst by thousands of votes from fans of the show. The best 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: 8/9/2026Network: NickelodeonStatus: Ended
The Wormhole Has Turned
star
10.00
29 votes

#1 - The Wormhole Has Turned

Season 1 - Episode 11 - Aired 5/11/2013

Dr. Cockroach creates a wormhole and tries to pretend that it's a teleportation device.

Directors: Eddie Trigueros
Flipped Out
star
10.00
58 votes

#2 - Flipped Out

Season 1 - Episode 10 - Aired 5/11/2013

B.O.B. is tempted to flip a secret switch.

Directors: Eddie Trigueros
It Came From Level Z
star
10.00
29 votes

#3 - It Came From Level Z

Season 1 - Episode 26 - Aired 10/19/2013

The monsters are ordered to clean up the rec room, so they recruit an old zombie to assist them.

Directors: Sunil Hall
Writer: John Behnke
Curse of the Man-Beast
star
10.00
29 votes

#4 - Curse of the Man-Beast

Season 1 - Episode 25 - Aired 10/19/2013

Monger's secret files are uncovered, revealing details of an absent Man-Beast.

Directors: Sunil Hall
The Time-Out That Wouldn't End
star
10.00
29 votes

#5 - The Time-Out That Wouldn't End

Season 1 - Episode 24 - Aired 10/12/2013

Sqweep makes a mess and is punished by Monger, who later commits the same crime.

Directors: Jim Schumann
Screaming Your Calls
star
10.00
29 votes

#6 - Screaming Your Calls

Season 1 - Episode 23 - Aired 10/12/2013

A living smart phone is created by Dr. Cockroach, and Coverton wants to use it to access the base's mainframe.

Directors: Sunil Hall
Speak Not the Q Word
star
10.00
29 votes

#7 - Speak Not the Q Word

Season 1 - Episode 22 - Aired 10/5/2013

Coverton has a sly plan to put bad words in B.O.B.'s vocabulary.

Directors: Sunil Hall
It Got Out of Hand
star
10.00
29 votes

#8 - It Got Out of Hand

Season 1 - Episode 19 - Aired 9/28/2013

Pranks abound on the base on April Fools' Day.

When Nature Shrieks
star
10.00
29 votes

#9 - When Nature Shrieks

Season 1 - Episode 17 - Aired 6/29/2013

The gang go camping, which turns into a terrifying outing.

Directors: Sunil Hall
Writer: John Behnke
Attack of the Movie Night
star
10.00
29 votes

#10 - Attack of the Movie Night

Season 1 - Episode 15 - Aired 6/15/2013

A memory extractor is created to combat nightmares spawned from scary movie night, but soon the extracted memories come to life.

Directors: Jim Schumann
Night of the Living Dog
star
10.00
29 votes

#11 - Night of the Living Dog

Season 1 - Episode 14 - Aired 6/8/2013

A device is made to transform B.O.B. into a perfect pet, and it works on everyone—except B.O.B.

Directors: Matt Engstrom
The Two Faces of Dr. Cockroach
star
10.00
29 votes

#12 - The Two Faces of Dr. Cockroach

Season 1 - Episode 12 - Aired 5/18/2013

Dr. Cockroach's new invention splits him into two, and the monsters try to make him whole again.

Directors: Sunil Hall
The Sound of Fear
star
10.00
29 votes

#13 - The Sound of Fear

Season 1 - Episode 20 - Aired 9/28/2013

Dr. Cockroach's transcript reveals he's missing a grade for a music class.

Writer: John Behnke
The Thing With One Brain
star
9.00
87 votes

#14 - The Thing With One Brain

Season 1 - Episode 13 - Aired 5/18/2013

Dr. Cockroach creates a brain for B.O.B., and Coverton makes an adjustment to it by adding an evil switch to it.

Directors: Matt Engstrom
Writer: Mark Palmer
Educational Television
star
8.50
58 votes

#15 - Educational Television

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

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

The Sorry Syndrome
star
8.50
58 votes

#16 - 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
Vornicarn
star
8.50
58 votes

#17 - 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
98 Pound Cockroach
star
8.50
58 votes

#18 - 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
It Came...on a Field Trip
star
8.50
58 votes

#19 - 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
Frenemy Mine
star
8.50
58 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
Maximum B.O.B.
star
8.30
86 votes

#21 - 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
Danger Wears a Diaper
star
8.00
174 votes

#22 - 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
The Toy From Another World
star
8.00
29 votes

#23 - 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
The Fruit of All Evil
star
8.00
86 votes

#24 - 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
The Bath Effect
star
7.80
115 votes

#25 - 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