He is considered the better and chronologically somewhat earlier representative of the group.
He mainly painted skyphoi, lekanes, kothones and Komast cups.
In contrast to later representatives of the group, he still mostly painted animals, in a more careful and powerful style than the Gorgon Painter.
Especially famous are his small-fornat mythical scenes placed within animal friezes.
The KX Painter can be considered the first Attic painter to achieve a quality at par with that reached in Corinth, then the dominant centre of Greek vase painting.