Having traveled through much of the known world in search of Caesars sword, Ambrosinus has then become Romulus tutor. A Druid and part of a secret brotherhood protecting the sword, he at times gives the impression he is a magician, but his"magic" is usually revealed to be simple trickery. One of the running concepts of the movie surrounds the question of whether or not Ambrosinus has any actual magical abilities or simply an illusionist. Romulus's father Orestes rules Rome but is not Emperor himself.