Collects Avengers (1998) 24-34, Annual 2000, Thunderbolts #42-44. Earth's Mightiest Heroes vs. Marvel's Most Wanted, and more! The crisis of the Eighth Day pits the Avengers against the unstoppable force that is the Juggernaut, while Triathlon's first day as an Avenger takes the team south of the border and back in time thousands of years! And how does the mystery of Madame Masque match the curse of Count Nefaria?

Captain America, Iron Man, Thor, and a large gathering of Avengers battle evil sorceress Morgan Le Fay in a strange medieval reality.

The European country of Slorenia is dead. Every man, woman, and child eliminated with the cold precision of a machine. And out of the flaming remnants of this tiny Baltic state comes a message from its murderer: Mankind's days are numbered because Ultron has returned! He - or it - is one of the Avengers' oldest, most implacable foes, menacing humanity countless times. But never before has Ultron been this dangerous, this deadly. Now, he stands on the brink of committing global genocide, and rebuilding Earth in his own robotic images. Our only hope is a desperate U.N. strike on Slorenia, led by the Avengers themselves. But will it be in time? Will the strength and courage of Earth's Mightiest Heroes be enough in the face of such overwhelming evil? For the sake of the world, it will have to be! Plus: When you're an Avenger, you're one of Earth's Mightiest Heroes - the first line of defense against the dangers no conventional foe could halt, the threats no ordinary man could withstand. Threats including Dominex, Lord Templar, Pagan, and the Thunderbolts! Collects Avengers #12-22, #0 and Annual 1999.

Relive the exciting adventures of Iron Man, Thor, Captain America, and the rest of the Avengers team! Actual frames from the TV episodes highlight the action in the story and fascinating facts about favorite super heroes and villains make for a fully immersive experience. Feel like you are a part of the action and become an expert on each of your favorite characters!

Fan-favorite creators Kurt Busiek and George Pérez usher in a new era for Earth's Mightiest Heroes! Since the team's inception, the Avengers have always defended humanity against the forces of evil. When duty calls, these legendary champions answer, fighting valiantly until justice prevails. But what happens when their oldest foes strike directly at the team? On the eve of a huge Avengers gathering, an attack by the evil enchantress Morgan Le Fay sends these assembled heroes into a strange medieval reality where nothing is as it seems. Held under Le Fay's thrall, the Avengers have lost all memory of their true identities. Breaking free of Morgan's spell, Captain America and Hawkeye must fight to free their teammates before the Marvel Universe is altered forever! Plus: The Avengers take on the Squadron Supreme! Collects Avengers (1998) #1-11.

AVENGER VS. AVENGER! Thanos has been defeated, but the Avengers' biggest challenge may come from within their own ranks! Captain America makes a discovery that may tear the team apart! And: Witness the origin of one of the Avengers' greatest villains! COLLECTING: MARVEL UNIVERSE AVENGERS ASSEMBLE: CIVIL WAR #1-4.

The members of the Avengers spring into action when there is trouble.

A diverse cast of characters -- Kamala Khan (Ms. Marvel), Miles Morales (Spider-Man), and Doreen Green (Squirrel Girl) -- team up in their first-ever middle-grade series told through comics, in-world artifacts, and more! Kamala Khan was an average middle school kid. That is, until a cloud called a Terrigen Mist swept through the New Jersey waterfront and activated her super powers! After taking on the persona of Ms. Marvel, she's been fighting crime in Jersey City, and has caught the eye of some pretty well-established super heroes. But that's not always a good thing...After Kamala is caught by news cameras taking on a super villain -- and accidentally destroying a building along the way -- she gets a letter from Captain Marvel herself! It's great that she's fighting crime and sticking up for people, but maybe a regular school isn't the best place to learn how to do that. If she wants to continue as Ms. Marvel, she's going to need to take on some new extracurricular activities -- mainly, training with other young super heroes alongside the Avengers!Now Kamala is the new kid at the Avengers Institute. Her classmates are all kids like her, they have special powers, but most of them have gotten into some trouble or drawn attention to themselves. The big news at the Avengers Institute this year? An academic decathlon in which students will group up into teams and compete against each other in super heroics. Kamala and her friends Miles and Doreen will have to go up against a team led by some kids who fight less than fair -- and have some trouble with the concept of "fighting for good" -- in this funny, action-packed look at some ordinary middle school kids who just happen to have some extraordinary powers.

The Avengers Assembly team takes a trip to Charles Xavier's Academy in their newest adventure! After training with the Avengers, Kamala, Doreen, and Miles are ready to branch out and expand their horizons. This semester, that means a trip north to study alongside the X-Men! If that wasn't enough, this semester features a field trip to the the Savage Land for a field trip -- an interdimensional planet that’s full of actual dinosaurs. Just what could go wrong? Turns out a TON in this laugh-out loud, action-packed adventure!