Chilkis was a male Starfleet officer who served on the USS Voyager in the 24th century and held the rank of ensign.
In 2374, Voyager was bombarded with radiation from a white dwarf star. Ensign Chilkis felt that he had "come over all funny" and reported to sickbay. He was released after Tom Paris treated a wound on his forehead. (VOY - String Theory novel: Cohesion)