The Dark Kingdom
Villains from Season 1.
Known as the "Negaverse" in the English version.
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The Death Busters
Villains from Season 3.
Known as the "Bad Behavior Bureau" in the English version.
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The Aliens
Villains from Season 2.0.
Known as the "Doom Tree Series" in the English version.
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The Dead Moon Circus
Villains from Season 4.
Known as the "Dark Moon Circus" in the English version.
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The Black Moon
Villains from Season 2.5
Known as the "Nega Moon" or "Dark Moon" in the English version.
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The Shadow Galactica Empire
Villains from Season 5.
They have not appeared in the English version.
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