Geryon
From LSJ
Ἕκτορ νῦν σὺ μὲν ὧδε θέεις ἀκίχητα διώκων → Hector, you run in pursuit of something unattainable | Hector, now art thou hasting thus vainly after what thou mayest not attain | Hector, now you are hasting thus vainly after what you may not attain
English > Greek (Woodhouse)
Γηρυόνης, -ου, ὁ (Ar., Ach. 1082), or Γηρυών, -όνος, ὁ (Aesch., Ag. 870).