There are EIGHT major characters in Inception.
ð Cobb (Leonardo DiCaprio) a.k.a “The Extractor” – he is specialized in stealing secrets from the subconscious of his subject.
ð Arthur (Joseph Gordon-Levitt) a.k.a “The Point Man” – he is Cobb’s second-hand man and a trusted and reliable worker.
ð Ariadne (Ellen Page) a.k.a “The Architect” – she designs the layout of dreams, and is a new member of Cobb’s team.
ð Eames (Tom Hardy) a.k.a “The Forger” – he is able to physically impersonate anyone in a dream.
ð Yusuf (Dileep Rao) a.k.a “The Chemist” – he formulates chemicals which are used to sedate people.
ð Robert Fischer (Cillian Murphy) a.k.a “The Mark” – the son of an ailing billionaire who inherits his energy empire when he dies.
ð Mal (Marion Cotillard) a.k.a “The Shade” - Cobb’s wife.
ð Saito (Ken Watanabe) a.k.a “The Tourist” – an energy tycoon whose empire has trouble competing with Fischer’s and intends to destroy his competitor’s empire.
And FIVE minor characters.
ð Old Saito (Earl Cameron) – an aged Saito stuck in limbo.
ð Maurice Fischer (Pete Postlethwaite) – Robert Fischer’s ailing billionaire father.
ð Browning (Tom Berenger) – Robert Fischer’s godfather, and a close associate of Maurice Fischer.
ð Miles (Michael Caine) – Cobb’s father-in-law, or Mal’s father.
ð Nash (Lukas Haas) – ex-architect of Cobb’s team.