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 process.

Monsters vs. Aliens Season 1 Episodes...

• s01e01 - Welcome to Area Fifty-Something
• s01e02 - Danger Wears a Diaper
• s01e03 - The Toy From Another World
• s01e04 - The Bath Effect
• s01e05 - The Fruit of All Evil
• s01e06 - Frenemy Mine
• s01e07 - Maximum B.O.B.
• s01e08 - It Came... on a Field Trip
• s01e09 - Educational Television
• s01e10 - Flipped Out
• s01e11 - The Wormhole Has Turned!
• s01e12 - The Two Faces of Dr. Cockroach
• s01e13 - The Thing with One Brain
• s01e14 - Night of the Living Dog
• s01e15 - Attack of the Movie Night!
• s01e16 - 98 Pound Cockroach
• s01e17 - When Nature Shrieks
• s01e18 - Vornicarn
• s01e19 - It Got Out of Hand
• s01e20 - The Sound of Fear
• s01e21 - The Sorry Syndrome
• s01e22 - Speak Not the Q Word
• s01e23 - Screaming Your Calls
• s01e24 - The Time-Out That Wouldn't End
• s01e25 - Curse of the Man-Beast
• s01e26 - It Came From Level Z
• s01e27 - Number Seven!
• s01e28 - The Friend Who Wasn't There
• s01e29 - Driven to Madness
• s01e30 - The Beast From 20,000 Gallons
• s01e31 - The Sneezing Horror
• s01e32 - Prisoner of the Dark Dimension
• s01e33 - I Predict Horror
• s01e34 - Destroy Chickie D!
• s01e35 - The Mystery of Dr. Cutter
• s01e36 - The Partymobile That Invaded Earth
• s01e37 - Ginormicat!
• s01e38 - My Monster, My Master
• s01e39 - It Came From Channel 5
• s01e40 - It Ruled With an Iron Fist
• s01e41 - This Ball Must Be Dodged
• s01e42 - It Spoke With Authority
• s01e43 - Debtor Alive!
• s01e44 - The Grade that Wouldn't Pass!
• s01e45 - You Can't Breathe in a Diner in Space!
• s01e46 - Race to the End... Zone!
• s01e47 - When Luck Runs Out
• s01e48 - That Which Cannot Be Unseen
• s01e49 - Bride of the Internet
• s01e50 - The Invisible Threat (Also Silent)

Monsters vs. Aliens Show Summary

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.