Lions are enemies in Kid Chameleon.
Lions use their scepter as a weapon. Before attacking, they will stand still for a moment, holding the scepter high. (That is probably your cue to damage them or split.) Then the green glowing gem in the scepter is thrown at great speed and remains buzzing around your character like a homing missile. This gem can do much damage, since it is like a bullet that can actually pierce through you as many times as it wishes; on the other hand, it can be stomped out.
Scepter gems bear only one hit.