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Marvel's Avengers
Season 3 • Episode 21 • Building the Perfect Weapon
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Marvel's Avengers Season 3, Episode 21: Building the Perfect Weapon
Following Truman Marsh replacing Hulk with Red Hulk, the Avengers must stop Leader from building and unleashing his secret weapon. Watch Marvel's Avengers Season 3, Episode 21 Building the Perfect Weapon in HD free online. Enjoy high-quality streaming of Marvel's Avengers Season 3, Episode 21 and share your thoughts in the comments below!
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Episodes
26 episodes
Adapting to Change
The Avengers learn what it's like to work as a team again as they battle a new and improved Super Adaptoid that was developed by A.I.M.'s Scientist Supreme.
22 min
The Ultimates
Ultron is back and plans to replace humanity with robots known as Ultimates.
22 min
Saving Captain Rogers
Captain America battles to rescue Winter Soldier who has been captured by Baron Zemo.
22 min
Under Siege
Hawkeye must defend the Avengers Tower from Baron Zemo who has taken the Masters of Evil members Beetle, Fixer, Goliath, Moonstone, and Screaming Mimi under his leadership.
22 min
The Thunderbolts
The Avengers fight to stop Justin Hammer’s new weapons factories, but are both helped and hindered by a mysterious new team of heroes known as the Thunderbolts.
22 min
Thunderbolts Revealed
When the Avengers discover that the Thunderbolts are actually the Masters of Evil, they must decide whether they can trust the villainous team to turn on their leader, Baron Zemo.
22 min
Into the Dark Dimension
Dr. Strange needs the Avengers' help when Dormammu steals the Eye of Agamotto.
22 min
Dehulked
Hulk is drained of his gamma radiation and stuck as Bruce Banner.
22 min
Inhumans Among Us
When townspeople transform into primitive creatures, the Avengers attempt to help them by putting themselves into conflict with the Inhumans.
22 min
The Inhuman Condition
The Avengers must team up with the Inhumans to stop their old foe, Ultron, who plans to unleash a dangerous weapon upon Earth.
22 min
The Kids Are Alright
Captain America and Iron Man must partner with new and young Inhumans - Inferno and Ms. Marvel - to stop another Inhuman, The Ghost, from stealing Friday.
22 min
The Conqueror
The Avengers try to stop AIM from stealing high-tech weapons from the future, which attracts the attention of the 30th Century warlord - Kang the Conqueror!
22 min
Into The Future
With the exception of Thor, the Avengers become trapped in the 30th century and must beat Kang the Conqueror to find their way back to their own time.
22 min
Seeing Double
Black Widow comes face-to-face with Yelena Belova, who in her determination to create the ultimate weapon turns Hulk into the Winter Hulk.
22 min
A Friend in Need
Thor teaches the Vision the value of friendship by taking him to Asgard where together they must fight an Ultron-controlled Destroyer.
22 min
Captain Marvel
The Avengers join Captain Marvel in a fight to stop a powerful sentient spaceship from destroying Earth.
22 min
Panther's Rage
Speaking before The General Assembly of The United Nations, Black Panther is targeted by Crossbones... and has issue with Captain America's possession of vibranium!
22 min
Ant-Man Makes It Big
On the set of a superhero motion picture, the Avengers team up with Ant-Man to stop the madman Egghead from destroying Los Angeles.
22 min
The House of Zemo
Baron Zemo returns to target the Avengers alongside his father, whom he's brought back from the 1940s.
22 min
U-Foes
The President has signed the New Powers Act in response to the Terrigen Fog creating new Inhumans and Truman Marsh is assigned to be the Avengers liaison to the government. Meanwhile, scientists backed by HYDRA enter a gamma storm with a stolen spaceship and are transformed into the U-Foes where they plan to take over HYDRA when Baron Strucker hasn't returned.
22 min
Building the Perfect Weapon
Following Truman Marsh replacing Hulk with Red Hulk, the Avengers must stop Leader from building and unleashing his secret weapon.
22 min
World War Hulk
The Avengers must stop an out-of-control Red Hulk as he threatens to destroy an entire town.
22 min
Civil War (1): The Fall of Attilan
The Avengers must stop Maximus from wreaking havoc in Attilan and causing its citizens to lose control of their powers.
22 min
Civil War (2): The Mighty Avengers
With the Avengers disbanded, a new team - the Mighty Avengers - steps in to take their place.
22 min
Civil War (3): The Drums of War
When the Inhumans are mind-controlled into attacking innocent humans, the Avengers must find a way to override their control and end the war.
22 min
Civil War (4): Avengers Revolution
The Avengers, old and new, must find a way to free the Inhumans and the world from Ultron's control.
22 min