In the vast universe of Marvel Comics, "Avengers: Doomsday" represents a pivotal storyline where the Avengers face an unprecedented threat that could wipe out not only their team but the entire planet. The name "Doomsday" echoes the destructive power that threatens the fabric of existence, pushing the Avengers to their limits in a battle for survival.

While this specific title doesn't exist as a standalone comic or movie, the concept of Doomsday in the Marvel universe draws inspiration from other major events and threats. The Avengers have faced numerous cataclysmic scenarios, including alien invasions, powerful cosmic entities, and even the end of time itself. A "Doomsday" event could take many forms, from a rogue artificial intelligence like Ultron to the arrival of destructive beings like Thanos or even Kang the Conqueror, who can manipulate time and space itself.

One of the most iconic "Doomsday" scenarios in Marvel Comics is tied to Thanos, who, in his quest for ultimate power, threatens to erase half of all life in the universe. In the Infinity Saga, particularly during Infinity War and Infinity Gauntlet, Thanos's actions almost brought about a doomsday-like scenario, requiring the Avengers and other heroes to unite to stop him.

In a broader sense, an Avengers "Doomsday" storyline would see the team pushed to the brink, forcing them to face internal struggles, moral dilemmas, and potentially the ultimate sacrifice to prevent an existential disaster. It would be a story of hope, resilience, and the power of unity in the face of overwhelming odds, something that has defined the Avengers since their inception.