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Monsters vs. Aliens
Season 1 • Episode 50 • The Invisible Threat! (Also Silent)
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Monsters vs. Aliens Season 1, Episode 50: The Invisible Threat! (Also Silent)
A metal robot battles with the monsters and aliens. Watch Monsters vs. Aliens Season 1, Episode 50 The Invisible Threat! (Also Silent) in HD free online. Enjoy high-quality streaming of Monsters vs. Aliens Season 1, Episode 50 and share your thoughts in the comments below!
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Episodes
50 episodes
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.
22 min
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.
12 min
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.
12 min
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.
12 min
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.
12 min
Frenemy Mine
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.
12 min
Maximum B.O.B.
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.
12 min
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.
12 min
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.
12 min
Flipped Out
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?
12 min
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.
12 min
The Two Faces of Dr. Cockroach
Dr. Cockroach is split into two personalities by his new teleportation machine.
12 min
The Thing with One Brain
Coverton installs an "evil" switch in a brain that Dr. Cockroach builds for B.O.B.
12 min
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.
12 min
Attack of the Movie Night!
Sqweep creates a memory extractor which releases a monster from a scary movie.
12 min
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 process.
12 min
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.
12 min
Vornicarn
When a vicious alien beast known as a Vornicarn hatches on Earth, the alien huntress Sta'abi arrives searching for it.
22 min
It Got Out of Hand
Susan tries to prevent the monsters from destroying the base with a doomsday prank.
12 min
The Sound of Fear
Dr. C's former teacher reveals a missing music grade in his transcript.
12 min
The Sorry Syndrome
Susan accidentally gets Sta'abi hunting for her after learning that apologies are a mark of disgrace for her people.
12 min
Speak Not the Q Word
After the monsters are informed that uttering alien swear words result in physical consequences, Coverton passes a list of those words B.O.B. to cause havoc.
12 min
Screaming Your Calls
Coverton plans to use Dr. C's invention to hack the base's mainframe.
12 min
The Time-Out That Wouldn't End
Monger puts Sqweep in time out for making a mess.
12 min
Curse of the Man-Beast
The monsters hack into Monger's top secret files.
12 min
It Came From Level Z
Monger orders the monsters to clean up the Rec Room.
12 min
Number Seven!
Sqweep has to go "number seven."
12 min
The Friend Who Wasn't There
Link pursues Sta'abi using a pheromone spray.
12 min
Driven to Madness
Link and Sta'abi duel for driving privileges of a new car.
12 min
The Beast From 20,000 Gallons
When an asteroid is detected heading for Earth, Team Alien is put in charge of the rocket being sent to destroy it. Meanwhile, Dr. C sends B.O.B. to play hide and seek. Unfortunately, he winds up hiding in the fuel being used to power the rocket, and Team Monster must rescue B.O.B. and alter the rocket's trajectory so it'll actually hit its target.
12 min
The Sneezing Horror
Coverton tries to steal base secrets when everyone gets the alien flu.
12 min
Prisoner of the Dark Dimension
Vornicarn's bad behavior lands him in the Isolation Zone.
12 min
I Predict Horror
B.O.B. eats Dr. C's ``probabilitator'' and foresees Coverton with a crown.
12 min
Destroy Chickie D!
Sta'abi is summoned to embark on her Warrior Vision Quest.
12 min
The Mystery of Dr. Cutter
Dr. Cutter arrives to update the base's technology.
12 min
The Partymobile That Invaded Earth
Link and Bob fix up an old spaceship and take it for a joyride.
12 min
Ginormicat!
A stray kitten makes its way to the base and obtains Susan's ginormica powers.
12 min
My Monster, My Master
Sta'abi recruits Bob to teach her the art of combat.
12 min
It Came From Channel 5
When Derek returns, strange secrets begin to unfold.
12 min
It Ruled With an Iron Fist
The monsters and the aliens are introduced to Rule-Bot when Monger goes away for the weekend.
12 min
This Ball Must Be Dodged
Monger gathers everyone for a game of dodge ball.
12 min
It Spoke With Authority
Dr. Cockroach creates a spray to give the president more authority.
12 min
Debtor Alive!
The monsters begin to borrow from Sqweep's allowance.
12 min
The Grade that Wouldn't Pass!
After Dr. C tampers with Sqweep's project, the alien receives a bad grade.
12 min
You Can't Breathe in a Diner in Space!
Dr. Cockroach accidentally teleports the diner into space.
12 min
Race to the End...Zone!
Link is disappointed when he can not play in the government football game.
12 min
When Luck Runs Out
A leprechaun joins team Monster.
12 min
That Which Cannot Be Unseen
After seeing something horrifying in Coverton's room, Team Monster must submit to memory wipes.
12 min
Bride of the Internet
Susan tries to escape the Internet.
12 min
The Invisible Threat! (Also Silent)
A metal robot battles with the monsters and aliens.
12 min