Creator
John Broome, Carmine Infantino
  
David Michelinie, Todd McFarlane
  
In Comics
The Flash #140 - The Heat Is On... For Captain Cold!
  
Web of Spider-Man #18 - The Longest Road
  
Relatives
Not Available
  
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)