I accidently saw the movie and here are some notes I made during
watching the movie:

1) Concidering Tobias doesnt know English, his pronanciation is good.

2) Tobias appears 10-12 times on the screen with dialog (saying not
only few single words, but several lines), plus several times we see
camera passing him.

3) Tobias playes Cassius, who wants - as many other people near
Julius - get his share of power. Cassius asks forgiveness for his
future crimes and he is the first one who hits the knife in Caesar.