Complex sentence: Most of the major deities of the Greek pantheon have roles in the novel and its successors; many secondary figures like Boreas and Orpheus also appear, along with decidedly minor personalities like Laverna, Corus, and Pherespondus the satyr.
Split into simpler sentences: Most of the major deities of the Greek pantheon have roles in the novel and its successors. Decidedly minor personalities also pop up, like Laverna, Corus, and Pherespondus the satyr.