He reatins his white skin but is depicted as a stuffed toy as opposed to a lviing cat.
Artemis only appeared in the first two musicals, Sailor Moon - Gaiden Dark Kingdom Fukkatsu Hen and its revision. Although they remained cats in the story, he and Luna were played by adult actors in cat-like costumes. They were never referenced again in any other Sailor Moon musical continuity. Artemis was played by Keiji Himeno.