Belzeb (ベルゼブ Beruzebu?) is the commander of the 3rd dimension invasion force appointed by Emperor Warusa of the Jaku Empire. He is a proud and passionate warrior. He is always in his fortress floating in space above the Earth, and he can appear from anywhere on Earth.

With him are Falzeb, a small pixie-like person who lives inside his chest cavity, as well as Taida, his faithful subordinate.

Later on, he receives Jaku Satan from the Emperor, and uses it in battle by fusing it with the Jaku Beast that's present.

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