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Season guide

The Avengers: United They Stand: Season 1

13 episodes Premiered Oct 30, 1999 Updated Sep 30, 2026
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Season 1 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 1 Progress Shield

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Binge Efficiency Engine

Season 1: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

23%
77%
Mytharc (3): Crucial lore & season climaxes
Core (10): Character development & subplots
Side Quest (0): Standalone / filler
S1·E1 Mytharc

Avengers Assemble (1)

Oct 30, 1999 · 20 min

Ultron creates the Vision and sends him to destroy Ant-Man.

S1·E2 Core

Avengers Assemble (2)

Nov 6, 1999 · 21 min

Wonder Man is put on life support and the Avengers must take over where he fell. Falcon joins the team and Vision is reprogrammed with some of Wonder Man's mind.

S1·E3 Core

Kang

Nov 13, 1999 · 21 min

After being accidentally freed by Dr. Chris Johnson and Falcon's nephew Andrew, Kang the Conqueror starts to create havoc while looking for a special crystal obelisk from ancient E

S1·E4 Core

Comes a Swordsman

Nov 27, 1999 · 21 min

Hawkeye must face his past and his old mentor the Swordsman. Meanwhile The Avengers face a group of thieves led by Ringmaster who has robbed a biological weapons study lab.

S1·E5 Core

Remnants

Dec 4, 1999 · 20 min

Strange remnants of Ultron's previous experiments create terror on an island where France's main nuclear testing facility exists. The Avengers race to control or destroy these mach

S1·E6 Core

Command Decision

Dec 11, 1999 · 20 min

The Avengers must stop the Masters of Evil, who are trying to steal a shipment of highly dangerous government weapons. To make matters more difficult, Captain America comes on the

S1·E7 Core

To Rule Atlantis

Jan 15, 2000 · 21 min

Mysterious earthquakes are caused artificially. The Avengers suspect prince Namor of Atlantis so they go under the sea to investigate. They discover Namor is not causing the earthq

S1·E8 Core

Shooting Stars

Jan 22, 2000 · 21 min

When satellites are blasted out of their orbits, the whole world is threatened. Learning that the criminal organization Zodiac is behind the chaos, the Avengers call upon the help

S1·E9 Core

What a Vision Has to Do

Jan 29, 2000 · 21 min

Vision volunteers to be "bait" to allow himself to be captured by Ultron as a way for the Avengers to track him to the villain's lair. It works, but Ultron is ready for them.

S1·E10 Core

Egg-Streme Vengeance

Feb 5, 2000 · 21 min

Egghead initiates a plot to destroy his archrival Ant-Man by making his "Pym particles" go crazy. The Avengers must prevent Ant-Man from shrinking to subatomic oblivion.

S1·E11 Core

The Sorceress's Apprentice

Feb 12, 2000 · 21 min

Scarlet Witch visits Agatha Harkness accompanied by Vision to see what she can do for Wonder Man, but she is kidnapped by the Salem's Seven. Scarlet Witch calls the rest of the Ave

S1·E12 Mytharc

Earth and Fire (1)

Feb 19, 2000 · 20 min

Something is dangerously affecting the magnetic fields of the Earth. Wasp realizes that her father's old business partner Cornelius Van Lundt is behind the disruptions. Wasp must f

S1·E13 Mytharc

Earth and Fire (2)

Feb 26, 2000 · 20 min

Someone wants an ancient meteorite buried beneath an island, which is the reason for the disruptions in the Earth's magnetic fields. The Avengers have a final showdown with the Zod

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