Xen

(Hellooo! not an MHA one this time!) so a parasite that was supposed to cure diseases and sicknesses (Even cancer) was discovered and it was injected into people with these sicknesses but to anyone's surprise they're actually bad and eat people's insides! (How fun..) they replace the missing organs with black goo organs Parasite appearance: They are usually small black goo worms but ones can turn into stronger animals (Keeping their goopy looks so ya that's it byeeee) You may be whatever pr whoever you'd like ^^ a parasite, a human, a human infected with a parasite:3 (This was a little inspired by Venom)