User blog:TheRadion/List of Multi-Phase Characters

Characters who have appeared in Phases 1 and 2

 * Tony Stark/Iron Man
 * Pepper Potts/Rescue
 * James Rhodes/War Machine/Iron Patriot
 * Happy Hogan
 * Howard Stark
 * Nick Fury
 * Bruce Banner/Hulk/Hulkbuster
 * Natasha Romanoff/Black Widow
 * Thor
 * Loki
 * Odin
 * Heimdall
 * Jane Foster/Thor
 * Frigga
 * Lady Sif
 * Fandral
 * Volstagg
 * Hogun
 * Erik Selvig
 * Darcy Lewis
 * Clint Barton/Hawkeye/Ronin
 * Jasper Sitwell
 * Steve Rogers/Captain America
 * Peggy Carter/Agent 13
 * Bucky Barnes/Winter Soldier/White Wolf
 * Arnim Zola
 * Maria Hill
 * Thanos

Characters who have appeared in Phases 2 and 3

 * Tony Stark/Iron Man
 * Pepper Potts/Rescue
 * James Rhodes/War Machine/Iron Patriot
 * Happy Hogan
 * Howard Stark
 * Nick Fury
 * Bruce Banner/Hulk/Hulkbuster
 * Roger Harrington
 * Natasha Romanoff/Black Widow
 * Thor
 * Loki
 * Odin
 * Heimdall
 * Jane Foster/Thor
 * Frigga
 * Fandral
 * Volstagg
 * Hogun
 * Clint Barton/Hawkeye/Ronin
 * Jasper Sitwell
 * Steve Rogers/Captain America
 * Peggy Carter/Agent 13
 * Bucky Barnes/Winter Soldier/White Wolf
 * Maria Hill
 * Thanos
 * Taneleer Tivan/The Collector
 * Alexander Pierce
 * Sam Wilson/Falcon/Captain America
 * Brock Rumlow/Crossbones
 * Sharon Carter/Agent 13
 * Jack Rollins
 * Pietro Maximoff/Quicksilver
 * Wanda Maximoff/Scarlet Witch
 * Peter Quill/Star-Lord
 * Gamora
 * Drax the Destroyer
 * Rocket Raccoon
 * Groot
 * Nebula
 * Yondu Udonta
 * Kraglin Obfonteri
 * Ronan the Accuser
 * Korath the Pursuer
 * Meredith Quill
 * Cosmo
 * Howard the Duck
 * Vision
 * Ulysses Klaue/Klaw
 * Laura Barton
 * Lila Barton
 * Cooper Barton
 * Nathaniel Barton
 * Scott Lang/Ant-Man/Giant-Man
 * Hope van Dyne/Wasp
 * Hank Pym
 * Janet van Dyne
 * Cassie Lang
 * Maggie Lang
 * Jim Paxton

Characters who have appeared in Phases 1 and 3

 * Tony Stark/Iron Man
 * Pepper Potts/Rescue
 * James Rhodes/War Machine/Iron Patriot
 * Happy Hogan
 * Howard Stark
 * Nick Fury
 * Bruce Banner/Hulk/Hulkbuster
 * Thunderbolt Ross
 * Roger Harrington
 * Natasha Romanoff/Black Widow
 * Peter Parker/Spider-Man/Night Monkey
 * Thor
 * Loki
 * Odin
 * Heimdall
 * Jane Foster/Thor
 * Frigga
 * Fandral
 * Volstagg
 * Hogun
 * Clint Barton/Hawkeye/Ronin
 * Jasper Sitwell
 * Steve Rogers/Captain America
 * Peggy Carter/Agent 13
 * Bucky Barnes/Winter Soldier/White Wolf
 * Maria Hill
 * Thanos

Characters who have appeared in Phases 1, 2 and 3

 * Tony Stark/Iron Man
 * Pepper Potts/Rescue
 * James Rhodes/War Machine/Iron Patriot
 * Happy Hogan
 * Howard Stark
 * Nick Fury
 * Bruce Banner/Hulk/Hulkbuster
 * Natasha Romanoff/Black Widow
 * Thor
 * Loki
 * Odin
 * Heimdall
 * Jane Foster/Thor
 * Frigga
 * Fandral
 * Volstagg
 * Hogun
 * Clint Barton/Hawkeye/Ronin
 * Jasper Sitwell
 * Steve Rogers/Captain America
 * Peggy Carter/Agent 13
 * Bucky Barnes/Winter Soldier/White Wolf
 * Maria Hill
 * Thanos

Characters who will appear in every Phase

 * Natasha Romanoff/Black Widow
 * Thor
 * Loki
 * Jane Foster/Thor
 * Clint Barton/Hawkeye/Ronin
 * Bucky Barnes/Winter Soldier/White Wolf

Characters who will appear in Phases 1 and 4

 * Natasha Romanoff/Black Widow
 * Thor
 * Loki
 * Jane Foster/Thor
 * Clint Barton/Hawkeye/Ronin
 * Bucky Barnes/Winter Soldier/White Wolf

Characters who will appear in Phases 2 and 4

 * Natasha Romanoff/Black Widow
 * Thor
 * Loki
 * Jane Foster/Thor
 * Clint Barton/Hawkeye/Ronin
 * Bucky Barnes/Winter Soldier/White Wolf
 * Sam Wilson/Falcon/Captain America
 * Sharon Carter/Agent 13
 * Wanda Maximoff/Scarlet Witch
 * Vision

Characters who will appear in Phases 3 and 4

 * Natasha Romanoff/Black Widow
 * Thor
 * Loki
 * Jane Foster/Thor
 * Clint Barton/Hawkeye/Ronin
 * Bucky Barnes/Winter Soldier/White Wolf
 * Sam Wilson/Falcon/Captain America
 * Sharon Carter/Agent 13
 * Wanda Maximoff/Scarlet Witch
 * Vision
 * Helmut Zemo/Baron Zemo
 * Stephen Strange/Doctor Strange
 * Brunnhilde/Valkyrie
 * Monica Rambeau/Lieutenant Trouble