A Frost Worm (アスヒモス Asuhimosu) is a monster that resembles a large centipede encased in ice. It is a purple-affiliated enemy. Frost Worms are one of few enemies in the game with no palette swap counterpart and is also one of few enemies with an immunity to a certain element color, in this case purple.

Frost Worms can use the following abilities:

• Attack

• Eternal Freeze: covers the area in front of it in ice that subsequently shatters, damaging all party members.

• Crystalen

• Panika

When defeated, Frost Worms yield 2,449 EXP, 531 Gold, and have a 3% chance of dropping a Crystalen Box. They are fought in Glacia.

Although the Frost Worm is one of the slowest monsters in Glacia, it has the highest Defense ratings by quite a large margin, coupled with strong attacks; only the Dolthstra has more HP. Therefore, it is these two monsters that you should focus your attacks on when they appear in battle.