|Nickname||Knock-off Suit, Suit 2.0, Suit The Sequel|
|Birth Date||April 24, 1977|
|Specialty||White Collar Crimes|
|Status||Deceased (Shot in the chest by Rachel Turner)|
|Portrayed By||Warren Kole|
|First Appearance||Out of the Frying Pan|
|Last Appearance||Controlling Interest|
|Episode Count||2 episodes|
|Images of Siegel|
Siegel was a top graduate at Quantico and served as a supervisor in the Chicago White Collar division for almost three years. While there he was a handle for a C.I. in a program modeled after Neal and Peter's. His case closure rate was in the 70 percentile, and he wanted to come to New York to be in the 80 percentile.
He is divorced and from a wealthy family. His grandfather owned a business that had a monopoly on making elevator buttons. Siegel grew up knowing bankers, stock brokers and trust-fund kids and came to realize he was surrounded by criminals. He never fit in and so he joined the FBI instead of joining the family business. After arresting family friends, he was disowned by his family. His wife left him because she missed the life of a 'Siegel' and instead got the life of an 'Agent Siegel'.
In "Out of the Frying Pan" Siegel transfers to the New York division and is assigned as Neal's handler. For their first case, Neal and Siegel investigate Little Star Merchandise, an importer and seller of looted art and antiquities. Unknown to Siegel, Little Star is operated by Mozzie under his birth name Theodore Winters. Neal manages to trick Siegel, and he and Mozzie fake Theodore Winters' death.
In "One Last Stakeout" Neal and Siegel try to catch an art thief. The theft of a painting, orchestrated by Neal and Mozzie, is a cover-up for Neal's attempt at stealing a chapter from a book for Curtis Hagen. At the end of the episode, Siegel is found dead. It is later revealed that he was shot by Rachel Turner.