Here are some details about Marvel:
Captain America
America’s World War II Super-Soldier continues his fight in the present as an Avenger and untiring sentinel of liberty.
Iron Man
Inventor Tony Stark applies his genius for high-tech solutions to problems as Iron Man, the armored Avenger.
Spider Man
Spider-Man is a superhero in American comic books published by Marvel Comics. Created by writer-editor Stan Lee and artist Steve Ditko, he first appeared in the anthology comic book Amazing Fantasy #15 in the Silver Age
Venom
Venom is a character appearing in American comic books published by Marvel Comics. The character is a sentient alien symbiote with an amorphous, liquid-like form, who survives by bonding with a host, usually human. This dual-life form receives enhanced powers and usually refers to itself as "Venom"