When grown up, Zeus returned to avenge his father and with his mother Rhea and grandmother Gaia’s assistance he persuaded Cronus to disgorge a stone, which led him to release the contents of a his stomach in a reverse sequence. As a result, Zeus the youngest child was deemed the eldest and the eldest child Hestia the youngest. With aid from some Titans and his siblings, Zeus imprisoned Cronus in the Tartarus and took over the throne, establishing a new lineage of gods, the Olympians.
Greek mythology also mentions a prophecy that remains to be fulfilled. Gaia prophesied again that Zeus, like his father Cronus and grandfather Uranus is meant to be overthrown by one of his sons, borne to him by Metis. There are various accounts of Porus, Metis’ son with Zeus but none of the tales matured to the extent of Zeus’ overthrowing by Porus.
Perhaps, the fall of Greek civilization and growing popularity of monotheistic religion like Christianity that believed in an all-loving and powerful God over pagan religions that portrayed gods with flaws and habits of humans, confined the scope for future literary figures of indulging in the literary narrative of Zeus’ overthrowing by his son Porus and establishment of a new lineage of Greek gods.