Lyoko sign

It is the oficcal sign of Lyoko.

It's often appearring in cartoon. It has several meanings...


 * When people are controlled by XANA, this sign appears on their eyes.
 * All Lyoko monsters have that sign. It's their weak spot.

William also has that sign on his lyoko suit. He is on the

opposite side. He's on X.A.N.A.'s side.