Colossal Long Legs

The Colossal long legs is a boss in Pikmin 3.9 that's body serves as the cave Colossal Cavern. At the end of the cave you fight the the Colossal long legs' heart which attacks you with a multitude of elemental attacks.

Appearance
The Colossal long legs is an Arachnorb that is half the size of the stage. It is covered in stone and moss.

Behavior
It slowly walks along the outside of the stage.

Strategy
Wait for the heart to stop attacking you, then throw your Pikmin at it.

Other
When you start your 2nd day at the Arachnorb Canopy you will be given the option to either land on the Colossal long legs or land at the normal landing site.