Dr. Calvin Zabo was a morally abject but brilliant medical researcher who was fascinated by the effect of hormones on human physiology. Zabo was eventually successful in creating the Hyde Formula, and turned into a huge, Hulk-like creature he called "Mister Hyde".
Featured in these Comics
-
![Captain America]()
2
Marvel Knights2002 - 2004 -
![Daredevil]()
4
Marvel Comics1964 - 1998 -
![Daredevil]()
1
Marvel Comics1998 - 2011 -
![The Incredible Hulk]()
1
Marvel Comics1968 - 1999 -
![The Incredible Hulk: Last Call]()
1
Marvel Comics2019 -
![Iron Man]()
1
Marvel Comics1968 - 1996
