Freel worm

Freel worms are a species of parasitic worms on Alia that take control of their host's actions entirely and "zombify" them. While the freel worm by itself is not powerful, if it finds a host, it can use their energy to access the freel worms powers, which allows the freel worm to transform their host to look like any alien with pretty good accuracy. The only problem is that the longer the freel worm stays inside the host, the longer the host continues to die and the worse they look. This is most apparent with their face. Signs of a freel worm are that the host's eyes will become similar to that of a snakes, such as their pupils being slit and eye color yellow, and also their skin will wrinkle and turn slightly brownish or pale. Once the host dies, the freel worm inside escapes and searches for another host.

Some people believe that all freel worms are sentient and have evil intentions, which is why they use their host to kill people. This is not scientifically proven.