Board Thread:Lion Guard Discussion/@comment-39401861-20190719171913/@comment-40251090-20190802150044

I think when the Guard is the Volcano, they will fight Scar's army and while the battle is raging, Kion will be caught off guard by Scar's vultures (His scar looks like talon markings). The next he will dawn a scar over his eye. I don't will have anything to do with how got his scar.

Number two reason might be, Scar burned Kion's eye with lava and that's why the Guard sets off for the Tree of Life. Kion needs to suck the magma/lava out so that it doesn't spiritually take over him.