Grimm will soon welcome a pair of familiar TV faces.

According to The Hollywood Reporter, Anne Dudek and Keith David will both stop by Season 3 of the NBC drama this spring, once it returns from a Winter Olympics-related hiatus.

Dudek (House, Covert Affairs) will appear on the installment "Once We Were Gods" and portray an archeology professor who starts looking into a 3,000-year old sarcophagus that is decorated with a carving of Anubis.

Davis will come on board "The Show Must Go On" as Heidg, the ringmaster for an unusual traveling carnival who will do whatever it takes to put on the best show he can.

Watch Grimm online now and then react to these casting announcements.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.