His conventional name is derived from a kalos inscription on a neck amphora in the British Museum (B 211). He is considered the most significant pupil of Exekias, from whom he adopted not only his artistic style but also some important motifs, such as Ajax and Achilleus playing a board game. He also frequently painted scenes involving the hero Herakles. In total, about 30 known vases are ascribed to him.
His collaboration with the Andokides Painter, usually considered the inventor of red-figure vase painting is unusual. On seven bilingual vases, six belly amphorae and a cup (now in Palermo), he painted the red-figure side, while the Andokides Painter was responsible for the black-figure one. At times, the subjects painted by both are identical. It remains disputed amongst scholars whether both painters are identical and merely represent one artist using both techniques. Already John Beazley saw them as separate artists, an argument later developed by Beth Cohen and Heide Mommsen. The identity of the two painters is supported by Konrad Schauenburg, Herbert Marwitz and John Boardman. Martin Robinson and others remained undecided.