Halloween Pics...Can you Guess the Theme?

We all decked out for the school Fall Carnival on Friday.  Dad was out of town for a wrestling training.  And there wasn't anyone to take pictures of all of us together.  But I love the pics we got (why don't I take out my big camera more often?).  And I am sort of afraid that we might not get any good pics on actual Halloween because the girls have choir, etc.  So I'll blog these.
Can you guess our theme for this year?

ROBINHOOD

QUEEN ELISABETH

OPTIMUS PRIME

CLEOPATRA

NOT PICTURED: ABRAHAM LINCOLN