<Li> Tzi Ma as Rikugun - Taishō Hidehisa Onoda (season 2), a leading member of the Japanese army . </Li> <Ul> <Li> Chelah Horsdal as Helen Smith, John's wife </Li> <Li> Quinn Lord as Thomas Smith, John and Helen's son and the eldest child . A member of the Hitler Youth, it is later revealed that he has inherited a form of muscular dystrophy from his father's side of the family . </Li> <Li> Gracyn Shinyei as Amy Smith, John and Helen's daughter . </Li> <Li> Genea Charpentier as Jennifer Smith, John and Helen's daughter . </Li> </Ul> <Li> Chelah Horsdal as Helen Smith, John's wife </Li> <Li> Quinn Lord as Thomas Smith, John and Helen's son and the eldest child . A member of the Hitler Youth, it is later revealed that he has inherited a form of muscular dystrophy from his father's side of the family . </Li>

The man in the high castle cast helen