World Axle - Underground Entry (Japanese: せかいのはしら ちかいりぐ World Pillar Underground Entrance) is the sixteenth region in Pokémon Rumble Blast. It consists of a Dark Legion Base; several floors infiltrated by the Dark Legion. Cobalion will join the player in the first run. All Pokémon aside of Cobalion encountered in this level are rusted.
A second Dark Legion Base is visited in the World Axle - Shaft.
Dark Legion base
- None of the Pokémon encountered here will drop as toys.
- The battle music is the same that is played in Tower areas.
- All of the Pokémon encountered here can normally only be encountered post-ending.
- All Pokémon located here are of the Dark type.