Plexippus is the uncle of While Meleager. He was one of the Kaldonian Boar Hunters. Plexippus was one of the hunters who was against Atlanta joining the Kalydonian Boar Hunt because she was a woman. When Meleager gave the head to boar to Atlanta (she having drawn first blood), Plexippus and his brother Toxeus further protested. Toxeus, Plexippus got in a fight with Meleager and killed them.