Swamp Terror is an Ancient Fly Trap Boss on Outcast Isle. This furious plant monster is often seen near the water on the sandy atoll. Seen at levels 30-35, this creature is by far the most powerful Fly Trap a pirate can ever encounter.
This boss has changed MANY times. Originally, it was a Huge Alligator Boss, but it has also been a Giant Scorpion Boss, a Rancid Fly Trap Boss, and even a Stump Boss, before it was moved to an Ancient Fly Trap.