Pillar Bot

The Pillar Bot is an enormous robot with long black arms. It was the boss of ninth floor in the Seventh Event.

Appearances
Maple and Sally take on this boss learning that it can counter all of thier attacks with similar looking moves. In the anime Maple takes down the boss using Machine God's drill form to drill through the boss from the top. In the Light Novel, the battle is more drawn out with Maple and Sally working together.