The Gegenees (Γηγενεής ) (Gēgeneēs) were giants with six arms in Greek mythology. The Doliones (Δολίονες) were the Gegenees. Cyzicus (Κύζικος) (Kúzikos) was their king.
Jason (Ἰάσων) (Iásōn) and the Argonauts (Ἀργοναῦται) (Argonaûtai) met with Cyzicus and the Doliones. It was during the quest for the Golden Fleece (Χρυσόμαλλον δέρας) (Khrysómallon déras).
There was a battle between them and Heracles (Ἡρακλῆς) (Hercules) saved the Argonauts.