This Daimon appeared in a flashback in the episode The Bond of Destiny! The Distant Days of Uranus. This Daimon took possession of a living boy. It attacked Haruka but was held off by Sailor Neptune. It was destroyed by Sailor Neptune, and the boy who was possessed by it survived.
Trivia
While this creature was never specified on screen to be a Daimon, one can assume so because of its uncanny resemblance to the Daimon in the manga and its acquirement of a human host rather than an inanimate object..
Although this Daimon had possessed a human boy, it was not humanoid in appearance. Mistress 9, another Daimon, had possessed Hotaru but appeared as a human lady rather than a monster.