1956 character: Jimmy Woo.

1960 character: Groot

The Fantastic Four 1961 team: Human Torch, Invisible Woman, Mr. Fantastic and The Thing.

1962 Marvel Characters plus Silver Age Appearance of Namor:

The Amazing Spider-Man, Giant Man, The Incredible Hulk, Jane Foster (Thor), The Mighty Thor, Namor the Sub Mariner, Rick Jones, Thadeus "Thunderbolt" Ross (Red Hulk), Betty Ross Banner (Red She Hulk) and Eugene "Flash" Thompson (Venom VI).

1963 Marvel characters the Avengers, the X-Men and Dr. Strange:

The Avengers: Ant Man I (Giant Man), the Incredible Hulk, The Invincible Iron Man, The Mighty Thor and the Wonderful Wasp. The X-Men: Archangel, Beast, Cyclops, Iceman, Jean Grey and Professor X. Doctor Strange the Sorcerer Supreme, Nick Fury Sr. and Otto Octavius (The Superior Spider-Man).

1964 Marvel Characters and the Silver Age Appearances of Bucky Barnes and Captain America:

Black Widow, Captain America the Sentinel of Liberty, Daredevil the Man Without Fear, Hawkeye, Mach One as Beetle, Bucky Barnes (The Winter Soldier) and Wonder Man.

1965 The Inhumans, Hercules and Spider-Gwen:

Black Bolt, Crystal, Gorgon, Karnak, Triton, Lockjaw and Medusa. Atlas as Power Man I, Hercules, Gwen Stacy (Spider-Gwen) and Swordsman.

1966 characters:

The Black Panther, Fixer II and The Silver Surfer.

1967 characters:

Adam Warlock, Black Knight III Dane Whitman, Captain Marvel, the Phantom Rider and Valentina Allegra De La Fontaine.

1968 characters:

Franklin Richards, Ms. Marvel and Vision.

1969 character:

Falcon.

Ronin's Marvel Golden Age Fan Page.

Ronin's Marvel Bronze Age Fan Page.

Ronin's Marvel Copper Age Fan Page

Ronin's Marvel Iron Age Fan Page