|Reconstructive Experiment Empire Mess
- takes over planets, using their lifeforms as fodder for its experiments
- goal is transformation of Great Emperor Lar Deus into strongest being in the universe .
|Reconstructive Experiment Base Labor
Flying saucer headquarters of the Empire.
|Great Emperor Lar Deus
Leader of Mess. Ends up as the monster Za Deusoola.
|Great Doctor Lee Keflen
Geneticist. Creator of the Beast Warriors. Originally from Earth.
Winged zebra-like field commander who can transform into the utterly bestial Wandarla.
Catlike field commander who can transform into utterly bestial Nefelura.
|Ley Garus (1-28)
White-furred, blue-skinned brute field commander.
|Ulk and Kilt
Nefelura's feline assistants.
|Sir Cowler (15-48)
Boss of the Alien Hunters, armed wih a whip. Kidnapped the five Earth babies who would grow up to be the Flashmen twenty years ago.
|Bo Gardan (43-48)
Second in command of the Alien Hunters.
Green-eyed, red-skinned insectoid footsoliders.
- Baura, Hag, Kerao, Hou, and one unnamed member