A replica of a dimensional god Mokona made by Clow Reed and Yuuko. Soel was created specifically for Sakura, as a countermeasure for certain events foretold to happen in her journey by Clow Reed. It is "the thing" given to the Tsubasa crew as a means to travel between dimensions. Soel is more energetic and cheerful than her counterpart, Black Mokona, Larg. Soel likes to tease the Tsubasa team members, especially Kurogane. Soel's main functions include dimensional travel, universal translator and communicating with Black Mokona. It is later revealed that these functions are part of her "108 Secret Skills." Soel bears an earring on her right ear, while Larg has one on his left ear.

Spoiler

The earring is later revealed to contain the one-time ability to "repel" magical curses. However, the ability itself was not explained.

In Horitsuba Gakuen, she is a twin with Mokona. (This is not the same Mokona which appears in CLAMP's other work, Rayearth.)