Creator
Gil Kane, Stan Lee
  
David Michelinie, Todd McFarlane
  
In Comics
Tales to Astonish #90 (April, 1967)
  
Web of Spider-Man #18 - The Longest Road
  
Relatives
Nadia Dornova Blonsky (wife, separated)
  
Carl Brock (father, estranged), Janine Brock (mother, deceased), Mary Brock (sister), Ann Weying (ex-wife, deceased), Symbiotes relatives: Toxin Symbiote (current symbiote, former grandson), Venom Symbiote (former symbiote, grandfather, former brother), Agony, Phage, Riot, Lasher (uncles, former sons), Scorn (sister, former niece), Carnage (father, former son), Scream (aunt, former daughter, deceased), Hybrid (uncle, former son, deceased)