Heterogeneity (heterozygous egg)
The alien eggs were laid by the alien queen and kept in the nest until human scientists stole them for experiments. However, it is also possible that aliens moved them to other places in order to expand their territory. Alien eggs are very sensitive to their surroundings, and any race close to them may prompt them to hatch, or even worse, they will be attacked by face protectors.
Hugging face (hugging face)
As long as the alien eggs begin to hatch, the face-hugger has two purposes: to survive and to find the host. In the first cycle of alien growth, the face-hugger is smaller, moves faster and has amazing leg strength. Once they find the host, they will jump on their faces, move their mouths and inject the alien fetus into their bodies from their throats. At this time, the person holding the face will give oxygen to the owner to save his life. After the fetal injection is completed, the mission of the face-hugger is completed.
Breast crusher (breast crusher)
Breastbreakers are the last stage of the growth of alien fetuses, and they have the genetic characteristics of the host. Once they grow up, they will choose to leave the host and cut open their bellies to kill it. Broken-breasted dragons only have sharp jawbones to bite their opponents when they grow into adult aliens, but they should try to avoid fighting. Because they have no feet, they can only crawl on the ground. They need meat food and molt once to grow into adult aliens.
Unmanned aerial vehicle (UAV)
Drones are aliens who are hosted by humans. They are excellent fighters with a balance of speed and combat effectiveness. They are flexible and good at moving in ventilation ducts. They usually move in groups, although they are also deadly when they move alone.
messenger
The messenger plays the role of a scout in the nest, which is slightly smaller and more suitable for activities in a narrow space. They are parasitic by other nonhuman mammals. Messenger has a speed that no other aliens have. Their heads are smooth and hard, and they have no spine. Their main attack mode is to pounce on their opponents quickly.
Former aliens (hybrids)
A hybrid is a rare alien. It is hosted by an iron warrior. The hybrid alien with the strongest strength and the largest range of surprise attack is a mixture of the genes of iron-blooded warriors and aliens. They are much stronger than ordinary species and can climb walls, but their bodies are slightly bulky.
imperial guards
The guards are big, but they are not easy to find. They usually lurk around the nest and are loyal guards of the alien queen. The alien guard is only one size smaller than the queen. Although they are huge, the guards have skin as hard as armored metal plates, which can resist general weapon attacks. Moreover, their melee ability is above five ordinary opposite sexes, and their agility and jumping ability are average. They can't climb walls and raid like other aliens.
Queen (alien queen)
The alien queen is an alien with strong body shape, strength and weight. She is the ruler of the nest, shouldering the mission of breeding aliens and having the right to command and manipulate other aliens. The queen ant is the master of the whole alien population. She is about 4.5 meters tall. Her main duty is silkworm eggs, but she won't stay in the nest all day like a docile old hen. When in danger, the queen ant can get rid of the huge spawning period and escape from the nest when threatened.
Queen (mother of aliens)
No matter from any aspect, the mother of aliens has always been a mystery in the scientific community. Alien mothers are often mistaken for queens because they are almost identical in appearance and ability. The only difference is that alien mothers have bigger bodies and stronger fertility, as well as the ability to control other aliens and even the queen.