Plato's real-life older brother and one of the main carriers bearing the intellectual weight of this dialogue. He is the person who respects Socrates the most but also presses him the most ruthlessly in his answers. By nature, he is a noble aristocrat and intellectual. Just to make the argument more challenging, he takes on the thesis that injustice secretly brings more happiness (citing the Ring of Gyges as an example). He builds an ideal state structure with Socrates, specifically a barracks-state utopia where there is no private property or marriage.
Child of the aristocrats Ariston and Perictione. He is highly educated, trained in the military, and familiar with the high political-intellectual assemblies of Athens. Well-versed in traditional warrior ethics.
A fit, observant young Greek aristocrat whose upright posture reflects both his youth and his robust character.
Sokrates
He views him as a respectable but challenging dialectical partner.
Adeimantos
His brother and intellectual complement.