Cast of Counterpart

J.K. Simmons portrays the dual roles of Howard Silk, a low-level bureaucrat at a United Nations agency, and his counterpart from the other universe. Howard is an unassuming and dedicated employee who is thrust into a dangerous world of secrets and espionage. Simmons is known for his versatile acting skills and has delivered memorable performances in films such as 'Whiplash' and 'Spider-Man'.

Nazanin Boniadi plays the character of Clare, a mysterious and skilled operative from the other universe. Clare is a highly trained assassin with a complex past, and her allegiances and motivations remain ambiguous throughout the series. Boniadi is an Iranian-British actress who has appeared in both film and television, including roles in 'Homeland' and 'Ben-Hur'.

Harry Lloyd takes on the role of Peter Quayle, a charismatic and ambitious employee at the United Nations agency. Quayle is Howard Silk's supervisor and becomes caught up in the dangerous web of espionage and deceit. Lloyd is a British actor who has appeared in various television shows such as 'Game of Thrones' and 'Manhattan'.

Olivia Williams portrays Emily Burton Silk, Howard Silk's wife. As the series progresses, Emily's loyalties and true intentions come into question, adding another layer of mystery to the story. Williams is a British actress who has appeared in films such as 'The Sixth Sense' and 'An Education', as well as television series like 'Dollhouse' and 'The Halcyon'.

Sara Serraiocco plays the character of Baldwin, an enigmatic assassin from the other universe. Baldwin is tasked with eliminating individuals from Howard Silk's world who pose a threat to the stability of the parallel dimensions. Serraiocco is an Italian actress known for her work in films such as 'Salvo' and 'Cloro'.

Nicholas Pinnock portrays Ian Shaw, a high-ranking operative at the United Nations agency. Shaw is a skilled and resourceful agent who becomes entangled in the complex web of espionage and parallel dimensions. Pinnock is a British actor who has appeared in television shows such as 'Marcella' and 'Fortitude'.

Betty Gabriel takes on the role of Naya Temple, a dedicated and astute investigator who works alongside Howard Silk at the United Nations agency. Temple becomes an important ally for Howard as he navigates the dangerous world of parallel dimensions. Gabriel is an American actress known for her performances in films such as 'Get Out' and 'The Purge: Election Year'.

Ulrich Thomsen plays the character of Aldrich, a mysterious and powerful figure who is involved in the conspiracy between the two parallel universes. Aldrich is an enigmatic character with his own agenda and motivations. Thomsen is a Danish actor who has appeared in films such as 'Festen' and 'The International', as well as television series like 'Banshee' and 'The Blacklist'.