What If...?

Sub-Mariner

Namor

Quicksilver

Pietro Maximoff

Hercules

Marvel, Olympian god

Marvel Girl

Jean Grey

Wonder Man

Simon Williams

Psylocke

Betsy Braddock

Doctor Octopus

Otto Octavius

Sabretooth

Victor Creed

Cannonball

Sam Guthrie

Havok

Alex Summers

Galactus

Galan

Franklin Richards

Powerhouse

Medusa

Medusalith Amaquelin Boltagon

Black Bolt

Blackagar Boltagon

Crystal

Inhumans, Crystalia Amaquelin Maximoff

The Watcher

Uatu

Mystique

Raven Darkhölme

Sunspot

Roberto Da Costa

Banshee

Sean Cassidy

Shadowcat

Kitty Pryde

Dazzler

Alison Blaire

Death

Marvel, abstract entity

Electro

Max Dillon

Rhino

Aleksei Sytsevich

Tigra

Greer Nelson, from Marvel

Karnak

Inhumans

Man-Thing

Ted Sallis

Firestar

Angelica Jones

Power Man

Luke Cage

Sasquatch

Walter Langkowski

Sunfire

Shiro Yoshida

Triton

Inhuman

Doc Samson

Leonard Samson

Hellcat

Patsy Walker

Dagger

Tandy Bowen

Cloak

Tyrone Johnson

Captain Marvel

Monica Rambeau

Leader

Samuel Sterns, from Hulk

Hyperion

Mark Milton, Marvel

Pyro

St. John Allerdyce

Longshot

typically from Mojoverse

Dormammu

from Dr. Strange

High Evolutionary

Herbert Edgar Wyndham

Mantis

The Celestial Madonna

Destiny

Irene Adler

Warlock

New Mutants

Eternity

Marvel, abstract entity

Klaw

Ulysses Klaue

Jocasta

built by Ultron

Owl

Leland Owlsley

Doctor Druid

Anthony Druid

Whirlwind

Dave Cannon, from Marvel

Ikaris

Eternal

Darkstar

Laynia Petrovna

Nova

Frankie Raye

The Whizzer

Robert Frank

Power Princess

Zarda Shelton

Gateway

Marvel, mutant

Ms. Marvel

Sharon Ventura

Puma

Thomas Fireheart

Yellowjacket

Rita DeMara

Arishem

Celestial

American Eagle

Marvel, Jason Strongbow