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Electroids resemble encaged spheres of electric matter with two eyes. They are purple in Donkey Kong Country Returns but in Donkey Kong Country: Tropical Freeze they gain a bluish tint, which corresponds to the game's arctic theme. Electroids are usually in groups, in which they generate electrical links between each other to form a plasma barrier; these barriers prevent the Kongs from passing take away a heart point upon contact.
Donkey Kong Country Returns
In Donkey Kong Country Returns and Donkey Kong Country Returns 3D, Electroids only appear in the Factory levels, moving near gaps and narrow passages in the Kongs' path. Electroids can generally not be defeated except if the Kongs throw a BuckBomb at it. In the level Switcheroo, Electroids hover in front of reversible walls, which appear in the background. When Donkey Kong and Diddy Kong activate switch platforms that an Electroid passes over, the walls extend out from the background and push it off-screen.
Donkey Kong Country: Tropical Freeze
In Donkey Kong Country: Tropical Freeze, Electroids are the only returning enemy from the previous game's Factory world. They only appear in one level, Frozen Frenzy. They either hover along a set path in midair or in place. Some of them appear beneath platforms with wired vines on either side. By touching a wire, an Electroid creates a current of electricity throughout the entire object. The Kongs must avoid getting in contact with the electricity or otherwise they lose health. This means if the Kongs tilt a platform too far, then the wire touches Electroid, thus electrocuting the whole platform and injuring the Kongs.