
In " How We Get to Peace," Clarke Griffin and Bellamy Blake conspire with Indra to stop the war by killing Cooper with the worms and making it look like an accident so that they can be destroyed and Octavia will be forced to surrender. During the Battle for Eden, Octavia Blake decides to weaponize them with the help of Kara Cooper. We do not know much about parasite worms but they are first encountered in " Shifting Sands". Small parasitical worms that burrow their way into human bodies, poisoning their victim and then bursting out of the stomach when they are done consuming the host they infested. Pauna last sighting was at the Zoo, according to Kane's map of Trikru.

It is unknown if any other giant gorillas exist. Clarke later said the door would not hold for long after they had gotten away from Pauna. Pauna killed Lexa's guard then Lexa and Clarke locked her in one of the rooms. In the episode " Survival of the Fittest", Pauna killed Quint and Major Byrne before chasing Lexa, Clarke, and Lexa's bodyguard into her feeding grounds amid the ruins of the National Zoo. Octavia Blake said he was a monster, but Lincoln thought Octavia hallucinated the man.Īs of Praimfaya, the fate of all Frikdreina is still unknown, due to the Second Nuclear Apocalypse. There was also a man with a severely mutated face and head seen in " The 48". An example is Zoran, a boy with a disfigured face and Emori, a Grounder with a disfigured hand. The deformations can happen in many places, but have only been seen on the head and hand thus far. When a child is born with a deformity, Grounders usually leave the infant to die so that "the nature can reclaim them". Grounders call people with deformities " Frikdreina" ( Trigedasleng). Humans can also be born with deformities due to radiation. They appear to have a similar mutation as the two-headed deer and potentially many other wildlife. Two-headed horses are identical to regular horses, only they have two heads. In the episode Red Sky at Morning, Luna mentioned that they fish giant lampreys for consumption. It attacks a boat with Sky People and consumes two of them before leaving. In " Blood Must Have Blood (Part 2)", a huge mutated lamprey goes on the hunt during night time. It can cause minor injuries or fatal ones, depending on how quick their victim is to escape. It slithers like a snake, but it also swims and bites like a piranha. It is estimated to be 10 feet long and 2 feet wide. Shown in the episode " Pilot", river snakes lurk in rivers and attack whatever comes into the river. They appear to group together and form roosts in trees, similar to migrating monarch butterflies. The butterflies so far have only been seen during the day and do not appear hostile, rather acting like normal butterflies. They look like ordinary butterflies, other than the fact that they seem to glow in the dark. The Luminous Butterflies are seen in the episode " Earth Skills". The secondary head has no antlers, one ear, a deformed snout, one eye and many pink spots.

The primary head has both antlers, one ear, a snout, one regular eye and barely any pink spots.

One head is the primary head with most of the features, the other one is the secondary head because it is relatively smaller and shares fewer parts. The body is the same in every way to a non-mutated deer the only difference is the heads. From the side view, the deer looks like any other regular deer would have prior to the apocalypse.

It is seen in " Pilot" and in the title sequence of every episode thus far. It is not hostile, and it is unknown if it uses both heads. The Two-headed deer is the result of mutation after almost a century of radiation, which caused it to have two heads.
