Appearing in 1st story
Featured Characters:
- New Avengers
- ⏴ Luke Cage ⏵ (Possessed by ⏴ Luke Cage ⏵)
- ⏴ Peter Parker ⏵ (Possessed by Peter Parker)
- X-Men
- ⏴ Emma Frost ⏵ (Possessed by Emma Frost)
- ⏴ Commander Wolverine (James Howlett) ⏵ (Possessed by ⏴ Wolverine ⏵)
- ⏴ Scott Summers ⏵ (Possessed by Cyclops)
- ⏴ Layla Miller ⏵ (Possessed by Layla Miller)
Supporting Characters:
- New Avengers
- ⏴ Tony Stark ⏵ (Possessed by Iron Man)
- ⏴ Agent Jessica Drew ⏵ (Possessed by Veranke)
- Agent Mystique (Raven Darkhölme) (Possessed by Mystique)
- X-Men
- ⏴ Kitty Pryde ⏵ (Possessed by Shadowcat)
- ⏴ Agent Nightcrawler (Kurt Darkhölme) ⏵ (Possessed by Nightcrawler)
- ⏴ Jennifer Walters ⏵ (Possessed by She-Hulk)
- Human Resistance
- ⏴ Cloak ⏵ (Possessed by Cloak) (See Chronology)
- ⏴ Daniel Rand ⏵ (Possessed by Iron Fist)
- ⏴ Felicia Hardy ⏵ (Possessed by Black Cat)
- ⏴ Marc Spector ⏵ (Possessed by Moon Knight)
- ⏴ Agent Rogue (Anna Marie Darkhölme) ⏵ (Possessed by Rogue)
- ⏴ Dr. Stephen Strange ⏵ (Possessed by ⏴ Doctor Strange ⏵)
- ⏴ Captain Marvel (Carol Danvers) ⏵ (Possessed by Carol Danvers)
- ⏴ Agent Toad (Mortimer Toynbee) ⏵ (Possessed by Toad)
Antagonists:
- House of Magnus
- ⏴ King Erik Magnus ⏵ (Possessed by Magneto)
- ⏴ Lorna Magnus ⏵ (Possessed by Polaris)
- Pietro Magnus (Possessed by Quicksilver)
- Wanda Magnus (Possessed by Scarlet Witch)
- Billy Magnus ⏵ (First appearance)
- Tommy Magnus ⏵ (First appearance)
- House of Magnus' Royal Guard (First appearance)
- ⏴ Sasquatch (Walter Langkowski) ⏵ (Possessed by Sasquatch)
- ⏴ Pyro (John Allerdyce) ⏵ (Possessed by Pyro)
Other Characters:
- S.H.I.E.L.D.
- Red Guard
- ⏴ Captain John Greycrow (Last chronological apparence) (Possessed by John Greycrow)
- Natasha Romanov (Mentioned)
- Commander Garrison Kane (Mentioned)
- Sebastian Shaw (Mentioned)
- Weapon XXXC (Mentioned)
- Jasper Sitwell (Mentioned)
- House of M's Guests
- ⏴ Lord Victor von Doom ⏵ (Possessed by Doctor Doom)
- ⏴ King T'Challa ⏵ (Possessed by Black Panther)
- ⏴ Private Genis-Vell ⏵ (Possessed by Captain Marvel) (First appearance)
- ⏴ Princess Ororo Munroe ⏵ (Possessed by Storm)
- ⏴ King Namor ⏵ (Possessed by Namor)
- Blob (Fred Dukes) (Cameo) (Possessed by Blob)
- Phantazia (Eileen Harsaw) ⏵ (First appearance) (Cameo) (Possessed by Phantazia)
- Jessica Jones (Mentioned)
- Jessica Jones (Mentioned)
- Mary Jane Watson (Mentioned)
- Mary Jane Watson (Mentioned)
- Charles Xavier (Mentioned)
- Charles Xavier (Mentioned)
- ⏴ Scarlet Witch (Wanda Magnus) ⏵ (Behind the scenes)
Races and Species:
- Mutants
- Skrulls
- Sentinels
- Human-Kree Hybrids
- Humans
- Brood (Mentioned)
- Kree
- Atlanteans
Locations:
- House of M
- Earth
- Africa
- Savage Land, Antarctica (Mentioned)
- Latveria, Europe (Mentioned)
- Manhattan, New York City, New York, U.S.A. (Mentioned)
- Atlantis (Mentioned)
- Earth
- Marvel Universe (Mentioned)
Items:
Vehicles:
- Quinjet (Mentioned)
- S.H.I.E.L.D. Helicarrier
Synopsis for 1st story
Emma Frost leads the assembled X-Men and Avengers, including Toad and Mystique, onboard the Helicarrier, using her telepathy to prevent anyone from seeing or hearing them. She then plants a command in Captain Greycrow's head to set course for Genosha.
A Latverian aircraft arrives in Genosha. Once it docks, Victor Von Doom disembarks to shake hands with Magneto, mainly for the pictures.
As the assembled heroes take a small break in the Helicarrier's cafeteria, Luke Cage tries calling his girlfriend Jessica Jones, only to hit her answering machine, learning that in this reality, she is dating a man named Scott. Cyclops then gives a rousing speech to everyone, stating that no matter what, they cannot hold back if they are to return things to the way they were. Spider-Man asks how are they going to do just that, to which Emma responds that they will figure that out when they arrive. However, Jessica Drew asks if it's better that they take a chance for happiness, to which Wolverine and Emma disagree.
In Genosha, as the House of Magnus welcomes von Doom, Namor, Storm, T'Challa and Genis-Vell as honoured guests from their respective nations, Cyclops organizes the X-Men and Avengers into three teams, to distract Magneto while Doctor Strange and Emma locate Professor Xavier. He is proven right, when one of the guards, Phantazia, senses the approach of a Sentinel, bearing down on the city. Magneto and Polaris are able to stop it in mid-air with their magnetic powers. Then, out of the Sentinel came the awakened heroes, attacking as a hard and fast as they could. Even Rogue tackles Namor and Storm to absorb their powers.
Elsewhere, Cloak brings Emma and Layla Miller to the Xavier Memorial Garden. Emma collapses to her knees, shocked that they have failed. However, Cloak looks beneath the stone and states that there are no bones, meaning that this isn't over yet.