Nelson Van Alden
| Agent Nelson Van Alden | |
|---|---|
| Boardwalk Empire character | |
| First appearance | "Boardwalk Empire" | 
| Last appearance | "Devil You Know" | 
| Portrayed by | Michael Shannon | 
| In-universe information | |
| Full name | Nelson Kasper Van Alden | 
| Alias | George Mueller | 
| Occupation | Agent of Bureau of Prohibition (seasons 1 and 2) Clothes iron salesman (season 3) Enforcer for Dean O'Banion (seasons 3 and 4) Enforcer for Al Capone (season 5) | 
| Spouse | Rose Van Alden (?-1921) Sigrid Mueller (1921-1931) | 
| Significant other | Lucy Danziger (1920-1921) | 
| Children | Abigail, Chester | 
| Nationality | American | 
Nelson Kasper Van Alden (alias George Mueller) is a fictional character on the HBO television series Boardwalk Empire, portrayed by Michael Shannon. He is a puritanical, repressed, religious fundamentalist and agent for the Bureau of Prohibition.