The Iron Warrior is an alien race in the movie "Iron Warrior" and its derivative works. It first appeared in the 1987 movie "Iron Warrior". The Predator is a sentient, humanoid extraterrestrial species that breathes an atmosphere similar to that of Earth, but possesses a level of evolution that far exceeds any technology available to humans, and is characterized by hunting other dangerous species, including humans, for sport and honor. Predators use highly advanced technologies, such as active camouflage and energy weapons, combined with relatively primitive conventional weapons, to track and kill prey. The Predators often ritually dismember their prey and usually receive their spoils from their prey.

Iron Blood Warrior is a fictional extraterrestrial life that appears in the movie series "Iron Blood Warrior". The physical characteristics of Iron Blood Warriors lie in their higher height compared to humans, facial features such as arthropod like jaws, and hair like appendages on their heads. The body can recover from trauma, multiple wounds caused by bullets, and resist radiation that can cause lethal doses to humans. They are also skilled climbers who have to climb trees or rooftops. Although one can stay in the low-temperature environment of Antarctica for a long time, they prefer a hot equatorial climate as their external body temperature compared to low-temperature environments.

Iron Blood Warrior is a fictional extraterrestrial life that appears in the movie series "Iron Blood Warrior". The physical characteristics of Iron Blood Warriors lie in their higher height compared to humans, facial features such as arthropod like jaws, and hair like appendages on their heads. The body can recover from trauma, multiple wounds caused by bullets, and resist radiation that can cause lethal doses to humans. They are also skilled climbers who have to climb trees or rooftops. Although one can stay in the low-temperature environment of Antarctica for a long time, they prefer a hot equatorial climate as their external body temperature compared to low-temperature environments.