Clef (クレフ, Kurefu?) is the chief of all sorcerers in Cephiro, and was formerly Princess Emeraude's attendant. In the anime, he is turned to stone by Zagato shortly after being introduced to the three girls in the first episode, although he fights the spell and communicated with them through Mokona. In the manga he is referred to as Guru Clef and is not turned to stone. In the second arc he also leads all of Cephiro until a new pillar can be found. In episode 48, he used all his willpower to create a castle to hold the castle from further collapsing.
In the manga Clef is often seen with Presea, who does not die and has romantic feelings for him. In the anime he is both loved by Sierra and the deceased Presea. When he first meet the girls, he reacts very unpleasantly to Umi who called him a "child" or 10 years old as stated by Umi; when in fact, he is already 571 years old.
In season 2 of the anime, it was hinted that he cares for Umi when she got abducted by the Twin Princess.
His name is derived from the Mazda Clef.
Voiced by: Nozomu Sasaki (Japanese), Steve Cannon (English), Immy Uncle (English) in OVA.
Read more about this topic: List Of Magic Knight Rayearth Characters, Characters of The First Season