Mark Protosevich Creator, Executive Producer, Writer Colin Farrell John Sugar Actor, Executive Producer Amy Ryan Melanie Mackintosh Actor Kirby Ruby Actor Dennis Boutsikaris Bernie Siegel Actor Nathan Corddry David Siegel Actor Alex Hernandez Kenny Actor James Cromwell Jonathan Siegel Actor Anna Gunn Margit Guest Star Elizabeth Anweis Mrs. Siegel Guest Star Sydney Chandler Olivia Siegel Guest Star Fernando Meirelles Executive Producer, Director Simon Kinberg Executive Producer Sam Catlin Executive Producer, Writer Audrey Chon Executive Producer Scott Greenberg Executive Producer Chip Vucelich Executive Producer Donald Joh Writer Adam Arkin Executive Producer, Director David Rosen Writer