CharacterCoach Sam Thorne (first appearance), Giant-Man (featured), Jemiah (introduction), Uatu, Eternals (Ajak), Medusalith Amaquelin Boltagon, UFO (introduction, an alien), Lady Sif, Professor Reinstein (supporting) (first appearance, death), L-5 (Thea Shilhausen) (villain, introduction), Hulk (flashback) (cameo), Sergeant Nick Fury, James Buchanan Barnes (flashback, death) (guest), Falcon, Belle Thorne (first appearance), Arishem, The Thing, Mose (Mason's butler), Wyatt Wingfoot (first appearance), Elizabeth Ross (supporting), Stevenson), "Brains Borelli" (villain), J. Arthur Grover (supporting) (first appearance, death), Diana (introduction), Sir Liyan), Izzy Cohen, Dr. Keith Kincaid, S.H.I.E.L.D. agents (Tyler, Gabe Jones), The Rawhide Kid (introduction, origin) (Johnny Clay, aka Johnny Bart), Wyatt Wingfoot, Heimdall (supporting), Seeker, Professor Daniel Damian, Coach Sam Thorne, Triton, Balder, Lord Seth (antagonist), Mole Man, The Vision (origin) (introduction, see also issue #23), Vulcan (introduction), Whitey Mullins (first appearance), Captain America (Steve Rogers), Captain Happy Sam Sawyer, Thing (Jack Kirby), Rock Trolls (antagonist), Parks, Bomber (villain, introduction), George Stonewell, Franklin Richards, General Heshin (villain), Hawk Brown (introduction, villain), Mercury (introduction, origin), Celestials (Gammenon, Silver Surfer (first appearance), Invisible Girl (Flo Steinberg), Reed Richards, Galan, Namor (antagonist), Evil New-Men (introduction), Ricardo Jones (Thing imposter) (death), Doris Evans, Baron Zemo (flashback) (in shadows, introduction), Knights of Wundagore (introduction), Franklin D. Roosevelt, Dean Asher, Karnak, Galactus (first appearance), New-Men (Sir Lepard, Steve Rogers (origin) (featured), Uatu the Watcher, General Phillips (supporting) (first appearance, unnamed), Belle Thorne, Corporal Dum Dum Dugan, Dr. Anthony Droom (later retroactively renamed Doctor Druid) (introduction, origin), Stallior, Medusa, Norrin Radd, Pluto (villain, introduction, alias Rudolph Hendler), Agent X-13 (supporting) (first appearance), Namor the Sub-Mariner (antagonist), Rick Jones, Susan Storm Richards, Rick Jones (supporting), Janet van Dyne, Jupiter (introduction), Fantastic Four (Mr. Fantastic (Stan Lee), Timberius, The Knights of Wundagore, Spade (introduction, villain), others), Whitey Mullins, Thing (Benjamin Grimm), Iron Man (featured), Celestials Third Host (in flashback), Aireo, Jimmy Woo, Maximus, Tana Nile, Jane Foster (supporting), The Watcher, Sub-Mariner, Thor Odinson, Spider-Man (Peter Parker), Bucky (flashback, death) (guest), Tefral (introduction), Man-Beast, Lockjaw, Iron Man (Tony Stark), Quicksilver, Doctor Murrow, Minerva (introduction), Wasp (featured), Roy Thomas, Gorgon, Leonus, Queenie (villain), Mister Fantastic, Yellow Claw, Sir Liyan) (introduction), Captain America (featured) (joins team), Apollo (introduction), Odin (supporting), Human Torch (Sol Brodsky)), Invisible Girl, Silver Surfer, Hulk (Bruce Banner) (origin), Celestials Second Host (in flashback), Heinz Kruger (antagonist) (first appearance, unnamed, death), Blackagar Boltagon, Harvey Elder, Human Torch, Pildorr, The Unknown (antagonist), Galactus, Crystal, John Brett, Dino Manelli, Thor (Donald Blake), Bruce Banner (flashback) (cameo), Ben Grimm, Scarlet Witch, Aeolus (introduction), High Evolutionary (introduction), Count Tagar of Wundagore, Vuk (antagonist) (introduction, unnamed, also in flashback), Man-Beast (introduction), unnamed Atlanteans, Shiela Mason (his daughter, introduction), Ben Bart (introduction, Rawhide Kid's uncle, death), Nurse Parkwell (first appearance), High Evolutionary, Celestials First Host (in flashback), Bucky (supporting) (first appearance, origin), Markham (scientist), Centarius (introducton), Sue Storm, Bucky Barnes, Thor (featured), Sir Ossilot, Skrulls, Hank Pym, Aarkus (origin) (introduction, see also issue #23), Dr. Enoch Mason (introduction), Sir Porga of Wundagore, Alicia Masters, Heinrich Zemo (flashback) (in shadows), Johnny Storm, Crystalia Amaquelin Maximoff, Recorder, Suwan, Captain America (featured) (first appearance, origin), Punisher Half-Robot Alien (Galactus) (first appearance), the Howling Commandos (Robert Ralston (Rebel Ralston), Field Marshal Erwin Rommel, Jane Foster, Black Bolt, Tony (villain, introduction), Malcolm Taurey (William) (villain), Lady Pamela Hawley, Heinrich Goertz (villain, introduction), Odin
Superhero TeamFantastic Four, Avengers