Rei/Alternate

The alternate version of Rei (綾波, Rey)/Reimon, is a Reionyx who comes from another universe. Unlike Rei, he still enables to use Reimon forms but making him unable to control his temper when nearing other Reionyx.

History
After having his Battle Nizer stolen by Alien Salomes in order for the creation of Mecha Gomora, the alternate Rei proceed to release his counterpart upon sensing him via Reionyx detection. As they witness the Imitation Ultra Brothers teleported via Darklops Zero, Hyuga appears and gives them the Neo Battle Nizer and summons Gomora to destroy the robots. Herodia summons Mecha Gomora and order him to fight. With Gomora controlled by both Rei overpowered by both Mecha Gomora and Darklops Zero, Ultraman Zero finally appears and assist Gomora. After the battle is over, the alternate Rei receives his counterpart's memory while holding the Battle Nizer itself and vanishes, bidding farewell to him.

Battle Nizer Monsters
Alternate Rei also has a Battle Nizer once, before it was stolen by Herodia.
 * Gomora (Primary monster), The Prince of Monters himself has been Rei's only monster. He was persumed died after the Alien Salome use the Battle Nizer for their creation of Mecha Gomora.

Powers and Abilities
As Rei, he is just a regular human, despite that he can control monsters, has extraordinary jumping and leaping abilities and is able to locate objects and signals telepathically.

However, as Reimon he gains great strength, agility, fighting skills, and other powers. His Reimon form is similar to Alien Reiblood and the Ultramen's appearances.

When Reimon feels extreme anger or rage, he transforms into Burst Mode (バーストモード, Bāsuto Mōdo), a black/red form. As Reimon he gains great strength, agility, fighting skills, and other powers. Besides his great skills as a fighter. However, he only appears in this form when a nearby Reionyx detected.

Trivia

 * This Rei has a high pitch voice and a blonde hair compared to the original.