The enemies found in the game are called machine soldiers and are robots built by the Naga Empire, often modeled after sea creatures. This page lists all the machine soldiers that appear in the game. Names, when given, come from either the art book, or an official video. "Armor" represents the number of boost attacks necessary to destroy the enemy in the Wii version of the game, when not powered up. The list of mech pieces (from the Wii U/3DS version) is not necessarily exhaustive.