Edward "Eddie" Kessler (played by Anthony Laciura), is Nucky Thompson's assistant. German is his native tongue, and he therefore has a very thick accent when speaking English. The character is based on the historical person Louie Kessel who was an assistant, bodyguard and driver to the real Nucky (Enoch L. Johnson).
Kessler is the somewhat hapless assistant of current city treasurer Nucky Thompson. As a German immigrant, he performs his duties as required, but routinely misunderstands or is misunderstood by his boss, as well as others. There is often an unintended comical after-effect of his best-of-intentions. Eddie is always on call and ready to provide Nucky with anything he may want or need, be it as common as a chauffeur, or something much more sinister. Interestingly, it is revealed that he carries a pistol, and is also a decent shot with it.