The Skeleton Glass fights much like other skeletons but is worth far more experience and drops large money bags and Rubies. These creatures seem to be the result of bizarre experiments as they are found contained inside of tube-like capsules filled with an unknown liquid, with their skulls replaced by a large eyeball instead. They are only encountered in a large room in the Skeleton Cave (Castle A).
These enemies are worth large amounts of EXP and are very easy to kill, making the room where they appear in a good place to level up. It is recommended to wear all of the player's Luck-boosting accessories to also make them drop $250 bags and Rubies while farming them.
As Juste reaches higher levels (around 40+), the experience they give will decrease significantly. When the player reaches level 45, all Skeleton Glasses will award only 1 EXP.