The Death Hunters (Avengers, Volume 10)

From there, the mysterious Avenger Prime deploys his operatives — the cybernetic soldiers called the Deathloks — to deal with grave threats to all the myriads realms that make up reality. But a hideous force has risen to oppose him, and these Multiversal Masters of Evil are the most vicious and dangerous foes any universe has ever seen. Now, the Deathloks have come to the Marvel Universe bearing a dire warning for the Avengers — and the Death Hunt is about to begin! For savage hunters follow close behind to ensure that the Deathloks’ warning of megaversal doom is never delivered. And their first stop is the golden realm of Asgard…

COLLECTING: Avengers (2018) 51-55, Free Comic Book Day 2021: Avengers/Hulk 1 (Avengers story)