||Diana - Cat Form|
Diana is a talking grey kitten who is ChibiUsa's guardian from the future. She is the child of Artemis and Luna. She first appears in Act 18, Volume 05 when the senshi visit Crystal Tokyo.
||Diana - Human Form
In the manga, Diana becomes a human on two separate occasions. She transforms in Volume 14, due to the power of the Ginzuishou, and again in Volume 17, when the cats are attacked by Tin Nyanko.