As of July 2026, Monsters vs. Aliens Season 1 aired in 2013 with 50 episodes — streaming now on Paramount Plus. Full episode guide and where to watch below.

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Monsters vs. Aliens Season 1

2013 50 Episodes Animation · Family ⭐ 6/10

Monsters vs. Aliens Season 1 is currently streaming on and , and it delivers exactly the kind of comedy that earns a loyal following. Across 1 season, the show has had time to find its rhythm and keep it. With 58 viewer ratings on TMDB, this is not a title flying under the radar. Watch it for Eric Edelstein — stay for everyone else around them. Start it whenever you need something guaranteed to land.

There is a reason Monsters vs. Aliens Season 1 keeps coming up in conversation. Monsters vs. Aliens Season 1 does what great comedies rarely manage — it is actually funny, consistently, across the whole run. Season 1 of Monsters vs. Aliens includes 50 episodes. It aired from March 2013 to February 2014. Eric Edelstein and Chris O'Dowd lead a cast that brings real weight to the material. It was aired in 2013. The real test of any comedy is whether it is still funny once you know all the jokes, and Monsters vs. Aliens Season 1 holds up on rewatch in a way that separates it from one-off curiosities. There is real craft here, even in the moments that do not fully land.

Monsters vs. Aliens Season 1 is the kind of thing you put on in the background and end up fully watching. It does not lean on comparisons to make its case. Short enough to finish in a weekend, substantial enough to feel satisfying. Eric Edelstein sets the tone, but the supporting cast is where a lot of the best moments come from. A reliable pick for any night you want quality comedy without the homework.

📡 Where to Watch Monsters vs. Aliens Season 1

🇦🇺 Australia

Paramount+ Amazon Channel

Paramount Plus Apple TV Channel

Paramount Plus Premium

Paramount Plus Basic with Ads

🎬 Monsters vs. Aliens Season 1 — Episode Guide

Welcome to Area Fifty-Something

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

Danger Wears a Diaper

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.

The Toy From Another World

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

The Bath Effect

Susan makes B.O.B. think that baths cure crankiness - B.O.B. leaps into action, chasing after Coverton to cure his crankiness once and for all.

The Fruit of All Evil

When Link accidentally eats the gelatin that B.O.B. calls his "girlfriend", it's up to the gang to figure out how to break the bad news.

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.

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.

It Came... on a Field Trip

The Monsters find an alien called Sqweep in the woods doing an earth studies project, which has a lot of sensitive data that could be used for an invasion.

Educational Television

It's all fun and games when Link and B.O.B. use Sqweep's tablet TV as a raygun, until a doomsday app is initiated that could destroy the planet.

B.O.B. discovers a secret switch that General Monger tells him not to touch. Will it get rewired before the Big Blue Blob can get to flip it?

The Wormhole Has Turned!

Dr. Cockroach overpromises that he's made a teleportation machine. Instead he's made a short wormhole and tries to pass it off as the real thing.

The Two Faces of Dr. Cockroach

Dr. Cockroach is split into two personalities by his new teleportation machine.

The Thing with One Brain

Coverton installs an "evil" switch in a brain that Dr. Cockroach builds for B.O.B.

Night of the Living Dog

Sqweep accidentally gives everyone except for B.O.B. the brains of a dog when he wants to do research on puppies.

Attack of the Movie Night!

Sqweep creates a memory extractor which releases a monster from a scary movie.

98 Pound Cockroach

To get strong enough to pass an obstacle course, Dr. Cockroach tweaks his 50/50 man/roach genetic makeup so he'll be 40 percent man and 60 percent roach. Unfortunately, his roach side keeps increasing at the cost of his human side and its intellect, forcing his teammates to find a way to reverse the...

When Nature Shrieks

General Monger takes Susan, B.O.B. and Sqweep on a camping trip to the desert. But when a lightning storm destroys their supplies and Monger is injured, Susan must take charge to get them back to base.

When a vicious alien beast known as a Vornicarn hatches on Earth, the alien huntress Sta'abi arrives searching for it.

It Got Out of Hand

Susan tries to prevent the monsters from destroying the base with a doomsday prank.

The Sound of Fear

Dr. C's former teacher reveals a missing music grade in his transcript.

🎭 Cast of Monsters vs. Aliens Season 1

Eric Edelstein

Chris O'Dowd

Dr. Cockroach Ph.D.

Riki Lindhome

Diedrich Bader

The Missing Link

Diedrich Bader

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