|First appearance:||Ultraman Zero The Movie: Super Deciding Fight! The Belial Galactic Empire|
|Latest appearance:||New Ultraman Retstuden Episode 150: Leo and Jack United! Oath of the Ultra Brothers Forever|
|Affiliation:||Kaiser Belial (creator and master)
Beatstar (second master)
- Subtitle: Empire Machine Solders (帝国機兵 Teikoku Tsukue-hei?)
- Beatstar subtitle: Celestial Sphere Machine Solders (天球機兵 Tenkyū Tsukue-hei?)
Ultraman Zero The Movie: The Revenge of Belial
Legionoids are one of the group of grunts in Kaiser Belial's galactic empire. They are numerous in number and are built for separate terrain locations.
The first batch of Legionoids revealed were Alphas, who were sent to harvest the planet Esmerelda for emeralds for Ultraman Belial. Run and Nao, two brothers and rebels, tried to fend off the batch of Legionoids but were quickly overpowered and endangered by a newly-revealed volcano. Ultraman Zero arrives in time to save them, merge with Run, and destroy a few threatening Legionoids, but is forced to flee into hiding with Nao when his strength is spent.
After meeting and befriending Princess Emerana, Jean-bot, Glen Fire and The Pirates of Flames, the group is ambushed by a massive squadron of Legionoid Betas, lead by one of Kaiser Belial's generals: Darkgone. With the heroes outnumbered by the mass quantities of Legionoids, Glenfire saves Ultraman Zero and company by agitating the Space Nitromethane Sea, which manages to destroy Darkgone's squadron of Legionoid Betas, but Darkgone himself escapes.
During the film's climax, when Arch Belial is preoccupied with the heroes, Glenfire brings along the Pirates of Flame, as well as the Planet of Mirrors's army and Esmerelda's Royal Guard. The combined forces of each planet's army manage to fend off the vast armies of Legionoids. Ultimately after Arch Belial's death, Ultimate Zero uses his remaining power to destroy his ship, taking a vast majority of Legionoids with it.
- The Legionoids are possibly based on the Fireman robot Baranda V.
Ultraman Zero Gaiden: Killer the Beatstar
Legionoids reappeared in the gaiden, Killer the Beatstar.
In part I of the special, the first Legionoid to be seen in the special is a Legionoid Beta, who is attacking a defenseless Princess Emerana. Rei and Hyuga of ZAP SPACY arrive and Rei saves Emerana by calling out Gomora. Gomora easily pummels the Legionoid and eventually destroys it with his Oscillatory Ray.
In part II of the special, it is revealed that an entire army of Mass Production Legionoids, Alpha and Beta types, have been created by Beatstar in his plans for Universal Conquest. Ultimately once Beatstar was destroyed, the Legionoid armies were destroyed in the planet's destruction.
Legionoids reappeared in the film Ultraman Saga.
Early in the film, a leftover squadron of Legionoids (both Alpha and Beta) were seen attacking Ultraman Zero on an asteroid belt. Fortunately, Ultraman Zero managed to destroy the squadron with ease with the Shield of Baraji.
An army of Legionoids appeared at the beginning of episode 150 of New Ultraman Retsuden. The armada is confronted by Ultraman Zero and Ultraman Leo. They are defeated with ease mostly with a combination of the Ultra Zero Kick and the Leo Kick, while the remaining ones are defeated with a combination of the Wide Zero Shot and the Ultra Shooting Beam.