Y U U K O
Yuuko, known to some as the dimensional witch, a very powerful sorceress whose past seems to be a mystery. Who is Yuuko? Upon meeting Watanuki, Yuuko introduces herself as Ichihara Yuuko, but tells Watanuki that it is a fake name. She seems to be a very wise person, knowing almost everything there is to know about any supernatural creature or ocurrence. But sometimes she likes to make fun of Watanuki, eat and drink as much as she can, and of course send Watanuki to run all sorts of errands that mostly turn out to be of a supernatural nature.
As the story progresses, we witness her great power and abillities, but where did they come from? Yuuko has the amazing power to grant any wish, as long as it has the proper compensation. But it can't be too much or too little, it must be according to the wish that is made. Yuuko makes several references as to have met Clow Reed, the powerful wizard who created the Clow Cards we meet in Card Captor Sakura. One of the things she mentions is to have created the 2 Mokona's upon meeting a special creature who bears their ressemblance. It seems he and Yuuko had been preparing for a great event that will determine a very important future.