Clow Reed

Clow Reed is the creator of the Clow cards, Cerberus, and Yue. He was half Chinese, and half British. He combined western and eastern magic to create a new form of magic.
Clow Reed had a twisted mind, and kept light of the situation, no matter how bad it may have seemed.
Clow Reed fell in love with Madoushi in his younger years, and taught her magic. She wanted to use magic for the wrong reasons, so Clow had sealed her away in another dimension, where there were two portals known, a well and a book.
Clow is no longer alive in Cardcaptor Sakura, but is reincarnated into Eriol and Fujitaka. He can still be seen to give advice, but only to the people who need it, mainly Sakura.