 Gwyneth Paltrow and Maximiliano Hernández reprise their roles from previous films as Pepper Potts and Jasper Sitwell , respectively . Paul Bettany returns to voice J.A.R.V.I.S. Frequent Whedon collaborator Alexis Denisof portrays the Other , and Damion Poitier portrays his master , Thanos ( unnamed in the film ) , in a post @-@ credit scene . Powers Boothe and Jenny Agutter appear as members of the World Security Council . Avengers co @-@ creator Stan Lee has a cameo appearance in a news report . Harry Dean Stanton cameos as a security guard , and Polish film director Jerzy Skolimowski appears as Georgi <unk> , Romanoff 's interrogator . Enver Gjokaj , who later went on to play Agent Daniel Sousa in the series Agent Carter , appears as a police officer . 
