Oscar Boneau, played by co-star Louis Gossett Jr., is Chalky's old mentor. The character only appears in the fourth season episode "Havre De Grace".
Season 4[]
Relationships[]
- Chalky White: Protégé and friend (deceased)
- Nucky Thompson: Former Boss (Presumably) (deceased)
- Louis Kaestner: Former Boss (Presumably) (deceased)
- Winston: Nephew and employee
- Weems: Employee, traitor
- Levi: Employee
- Ayleese: Cook
- Emmett: Dog