All the early 90s Marvel Super Heroes Advanced Set team based update sourcebooks had 60+ page roster books of heroes and villains and this one is no exception.
Ant-Man II, — Absorbing Man,
Big Bertha, Black Knight III, Black Panther, Black Widow, — Baron Zemo II, Beetle, Black Talon,
Captain America, Captain Marvel II, Crystal,
Dinah Soar, Doorman, Doctor Druid, Doctor Pym, — Doctor Demonicus, Dragon Man
Flatman, Falcon, Firebird,
Giant-Man II, Gilgamesh, – G’haarak, Goliath III, Graviton, Grey Gargoyle, Grim Reaper,
Hawkeye, Hellcat, Hercules, Hulk, Human Torch I,
Iron Man I, Iron Man II,
Jocasta, Rick Jones,
— Kang, Klaw,
— Leader, Living Laser, Living Lightning, Loki,
Machine Man, Mr Immortal, Mantis, Mockingbird Moon Knight — Master Pandemonium, Modam, Moonstone,
— Nitro,
— Orka,
Quasar, — Quicksand,
Rage, Red Wolf II, — Radioactive Man, Rampage,
Scarlet Witch, Sersi, She-Hulk, Shroud, Spider-Man, Spider-Woman, Starfox, Stingray, Sub-Mariner, — Sandman, Sons of the Serpent, Space Phantom, Sunstroke, Super-Adaptoid,
Thor I, Thor II, Tigra, — Taskmaster, Tiger Shark, Thanos, Titania,
US Agent,
Vision,
Wasp, Wonder Man, — Whirlwind,
Yellowjacket II,
1.22 Character Density