It's all about the anime stuff. Atleast for me and others who like it.
Satella Harvenheit who has been searching for her for years. Before Aion had taken her and drained her blood, but her powers remained, and kept her as a slave. Now she cares for Joshua and also serves for Aion. Rosette is determined to get the earth safe, even knowing her life is going to end soon enough.
Zashiki-warashi is a young spirit who lives on a mountain with her pure spirited energies. She used to be alone and whenever she is in danger or cries of joy, her Tengu Guardians come recue her. She first sees Watanuki when his sight of spirits becomes known among other spirits. She gets a crush on him when she accidentally steals Dōmeki's soul while attempting to get a good Obon gift for him. He soon SEES her when he tries to give her a White Day gift, and he hs to save her from Jorougumo that captures her after a failed attempt to recover Watanuki's eye. She is determined to keep Watanuki alive.
The black Mokona Modoki, whose real name is Larg, belonged to Yuko as a friend and a drinking buddy. He loves to be around Watanuki and loves to play with Maru and Moro. He has one earring on his left ear that seals powers and Sakuras' memories of prince Syaoran and of Watanukis' past memories.
Haruka Dōmeki is the grandfather of Shizuka Dōmeki and looks exactly like him, eccept that he has a more cheerful attitude and always smokes. He has the ability to destroy evil spirits and can go into dreams, always appearring in Watanukis' dreams as a young teenager, giving him advice and helping him on his missions, but only in his dreams. He soon helps Watanuki remember his past slowly but trust worthy.
Ame-warashi is a spririt of nature. She really doesn't like humans because of the way they treat nature, poorly and they always litter. She use to own Kudakitsune, a pipe fox, but gave it to Yuko for grating her wish for nature. Yuko, however, gives it to Watanuki to go on his missions. Ame does not like Watanuki, but appreciates Watanuki for helping her on one of his missions.
Kudakitsune, soon named Mugetsum, is a pipe fox that turns into a tube fox spirit. He used to belong Ame-warashi but was given to Watanuki as a 'thank you' gift. He soon becomes attached to Watanuki and helps him on dangerous missions. He usually looks like a snake with a fox-like head, but it can transform into a nine tailed fox to show it's true power, but to reveal it, there must be a lot of spiritual energy. 
Maru(long blue hair) & Moro(short pink hair) are two young girls Yuko had created to help at her shop and keep company, however thay can never leave the shop because thay have no souls. The girls are the source of power to keeping the shop at stand. They must sleep long hours to re-bost their powers. Before Yuko dies, she gives the last of her powers to make them return to the shop. Watanuki is now the master of the shop and must take the twins in as his assistants to keep the shop at stand for the girls. As Watanuki works with them, they all create a tight bond and Watanuki learns more about them each day.
Kohane Tsuyuri is a young girl with an un-happy life. She is a child prodigy, a medium and a exorcist. She has helped her mother with her fathers affair life and now her mother is a bit happy to know her daughter isn't a monster, though it hurts Kohane that her own mother thought she was evil. Kohane is determined to get rid of her powers and to get happiness in her life, so she goes to Yuko for help, in exchange for her exorcism ability, (because Yuko claims it belonged to her though it arreganaly came from princess Sakuras' feather.) However, Kohane can't get rid of her sight and is un-happy for that. But when she meets Watanuki, a boy who can also see spirits, she becomes friends with him and soon after Yuko dies, Kohane becomes a student at Tsuji Academy and visits Watanuki often in the shop. Though she keeps hidden her feelings and affection from him until she is ready and not afraid. 