In Greek mythology, Abas (Ancient Greek Ἄβας) is the twelfth king of Argos, son of Lynceus and Hypermnestra, and father of the twin rivals Acrisius and Proetus. He is remembered as a conquering warrior whose shield later put enemies to flight, and as the founder of Abae in Phocis and Argos Pelasgikon in Thessaly.
Adapted from Wikipedia, "Abas (son of Lynceus)" · CC BY-SA 4.0
I.King of Argos
Abas inherits Argos from Lynceus, the sole son of Aegyptus spared by the Danaids, and Hypermnestra. With Ocalea (or Aglaea) he fathers the twins Acrisius and Proetus and a daughter Idomene; Pausanias also names an illegitimate son Lyrcus, eponym of Lyrcea.
He founds Abae in northeastern Phocis, seat of an oracular temple of Apollo Abaeus, and Pelasgic Argos in Thessaly. When he reports Danaus' death to Lynceus he is rewarded with his grandfather's shield, sacred to Hera — so terrible in his hands that enemies flee even after his death at the mere sight of it.
II.The twin succession
Abas bids Acrisius and Proetus rule alternately, but they quarrel even in the womb. After his death the kingdom is split between them — the fork that leads to Danaë, Perseus, and the Proetid house.
The atlas id abas is this Argive king alone. Other Abas figures (Metapontine, Trojan, etc.) are separate namesakes.