Viper vs Madame Xanadu Facts
Origin
  
  
Creator
Jim Steranko
  
David Michelinie, Val Mayerik
  
Universe
Earth-616
  
Earth-One, New Earth
  
Publisher
Marvel comics
  
DC
  
First Appearance
  
  
In Comics
Captain America #180 (as Viper)
  
Doorway to Nightmare #1 - Doorway to Nightmare
  
Comic Appearances
480 Issues
  
99+
310 Issues
  
99+
Characteristics
  
  
Hair Color
Black
  
Black
  
Eye Color
Green
  
Green
  
Profile
  
  
Race
Human
  
Human
  
Citizenship
Non American
  
British
  
Marital Status
Divorced
  
Single
  
Occupation
Not Available
  
Not Available
  
Base
Not Available
  
Not Available
  
Relatives
Not Available
  
Not Available