Oltos was a Late Archaic Greek vase painter, active in Athens from 525 BC to 500 BC. About 150 works by him are known. Two pieces, a cup in Berlin and a cup in Tarquinia, are signed by him as painter.
Athena and Enceladus in combat, red-figure plate, Louvre CA 3662.
Dionysos, interior image from a bilingual cup (A), Munich, Staatliche Antikensammlungen (Inv. 2593).
Eurystheus hiding in a jar as Herakles brings him the Erymanthian boar. Side A from a red-figure kylix by Oltos, ca. 510 BC, Paris, Louvre (G17).
Nikosthenes was a potter of Greek black- and red-figure pottery in the time window 550–510 BC. He signed as the potter on over 120 black-figure vases, but only nine red-figure. Most of his vases were painted by someone else, called Painter N. Beazley considers the painting "slovenly and dissolute;" that is, not of high quality. In addition, he is thought to have worked with the painters Anakles, Oltos, Lydos and Epiktetos. Six's technique is believed to have been invented in Nikosthenes' workshop, possibly by Nikosthenes himself, around 530 BC. He is considered transitional between black-figure and red-figure pottery.
Amazonomachy. Side A from an Attic black-figure Nikosthenic amphora, ca. 520–510 BC, located in Paris, Louvre, F 111.
Nikosthenes' signature (Nikosthenes epoiesen) on the neck of a black-figure Nikosthenic amphora, c. 530–520 BC, located in the Louvre