The v1.1 Thaw of Eons update for Wuthering Waves added an entire area of Mt. Firmament, featuring new creatures including the Frostbug.

While you can't catch Frostbug's Echo in Wuthering Waves like other Tacet Discords, you can kill them to get 20 Astrite per elimination. Astrites are essential to summon in multiple banners to pull characters, so keeping a high stock increases your chances of getting the Resonators you want.

Here's everything you need to know to find all of the Frostbug locations in Wuthering Waves.

Frostbugs are scattered throughout the island of Mt. Firmament and are surrounded by blocks of ice, which also drop loot when broken with a melee or ranged weapon. They are unique creatures that gather and go underground when you get close to them, so you'll need to use a ranged attacker like Mortefi or Chixia to kill them from a distance.