OverviewA giant caterpillar that spawns in where trees are and at the bottom of the queen dungeon. They can kill every bug in the forest but the truth is, its a tad bit weaker than the Hercules beetle. They explode into butterflies when they die. They also drop the Caterkiller jaw which is used of Big Bertha. If it lives long enough it will transform into the Brutalfly!
The Caterkiller is one powerful boss, It can eat wood and trees to heal itself, Ruby Gear is advised when taking on this hungry caterpillar, One tip is to knock it into a corner where it wont be able to regenerate. Having a Bow also helps, As you can keep shooting the boss to prevent it from moving to any nearby trees.