![image](https://comicvine.gamespot.com/a/uploads/square_tiny/11114/111147698/4287781-screen%20shot%202014-12-21%20at%206.43.09%20pm.jpg)
Thaddeus Sivana Jr.
the youngest of four children. The World's Most Wickedest Boy Scientist, he the spitting image of his dear old dad.
Name:
Thaddeus Sivana Jr.
Publisher:
Real name:
Thaddeus Bodog Sivana Jr.
Aliases:
- Sivana Jr.
- The World's Wickedest Boy Scientist
Birth date:
None
Gender:
Male
Powers:
- Gadgets
- Intellect
First issue:
Captain Marvel Adventures (1941) #52 Capt. Marvel Battles the Giant Earth Dreamer
![cover](https://comicvine.gamespot.com/a/uploads/original/11114/111147698/4287781-screen%20shot%202014-12-21%20at%206.43.09%20pm.png)
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