Troy

Brad Pitt

Achilles

Frank Welker

Fred Jones / Scooby-Doo (voice)

Orlando Bloom

Paris

Casey Kasem

Shaggy Rogers (voice)

Eric Bana

Hector

Mindy Cohn

Velma Dinkley (voice)

Grey DeLisle

Daphne Blake (voice)

Brian Cox

King Agamemnon

Sean Bean

Odysseus

Brendan Gleeson

Menelaos

Diane Kruger

Helen

Peter O'Toole

Priam