Scareships are the dummies that Ruffnut and Tuffnut created in Edge of Disaster, Part 1. They were designed to take the place of the twins in the lookout tower so they could sneak away and goof off instead of stay at the watchtower. They were later used by Tuff and Astrid to make it look like the Edge was well guarded in Edge of Disaster, Part 2.
- The Scareships are a clear parody to "scarecrows", except they're meant to scare off enemy ships instead of birds.
- Ruffnut Thorston affectionately names the Scareships "Stuffnut" and "Fluffnut".