The Trasher is a Pre-Hardmode enemy that spawns in the Sulphurous Sea. In the water, it swims quickly towards the player in attempt to attack them, but can also walk slowly on land. It moves faster as it loses more health. It can spawn in both water and on land.
- If the Angler is not present in the world, he will drop out of the Trasher when it is killed.
- If the Angler is present in the world, when killed by a Trasher in Hardmode he will drop a Golden Fishing Rod.
- The Trasher will remain passive until provoked by the player, meaning that summoned minions will not directly attack the Trasher immediately; however, they will still deal contact damage and will walk toward the player when on land.
- It will also swim through blocks, similar to Cnidrion.