Artimus is the cat chosen to awaken Sailor Venus when she was in England. Origianlly, she was known only as Sialor V, phantom fighter for justice and love, but the main reason she was even around was because of Artimus. He awakened a memory given her from the moon computer, the one holding the soul of Queen Serenity once Sailor Moon was ready. Artimus never told Sailor V, but the person running the show was actually the moon computer.While they were always to answer to a man known only as the 'boss', it was really just a manifestation in the moon computer.� She was called Princess serenity when she met the other scouts because it was Artimus' job to train her to lead and fight by herself and protect so that she could fullfill her job as the leader of the Four Guardians of the Moon Princess. Artimus is a lovable white kitty who has a creseant mark on his forehead and loves to get his chin scratched and his tummy rubbed. He is always one to take the role of the responsible male, but at times he can be a little flaky, but then can't we all?

Artimus is also the counterpart of Luna, the cat given the role of training the four remaining scouts besides Venus to take on the enemy. Luna is all black and has a cresant on her forehead. She loves milk in the morning, but she rarely has time to have any becasue trying to train Serena alone is a full time job. She truly cares about Serena and her role as what she thinks is the leader of the Sailor Scouts. Luna was under the impression that Venus was the true Princess, and she was training the four scouts to protect her, when in fact the one she loved the most was the one she was supposed to be protecting. Luna, on more than one occation, was willing to sacrafice herself in the line of duty if it would save her mistress, Princess Serenity.

Diana is the youngest cat, the daughter of Luna and Artimus. She is the young feline handmaiden of Chibi Usagi, Serena and Darien's future daughter. When this little girl travels into the past, Diana comes after her to protect her and guide her safely home once more. She is by far the most compassionate and most vulnerable cat not just because of her size but because of her innoccence. She is just like little Reeny in many ways. She does not know much of the world to fully understand what is happeneing around her, but when she picks up on something, she has absolutely no problem with sharing her new found knowledge with everyone around her. She is often a blabber mouth, but aren't all special little girls?