Circe

That's the rumor.

What's missing in movies is same as in society: a good sense of work ethic and living up to ideals.

Its rumoured, but I hope not. Having two A-listers in one movie normally doesn't go so well (exceptions do exist: Batman Returns).

Circe is a great villain, but if Ares is also in this, how is a (admittedly great and scary) sorceress going to hold up against a god?