Cephalo

 Cephalo  are matured Type 2 Plagas, a variant of the Las Plagas parasite, who appear as long centipede-like creatures that burst from the neck of a host Majini with a long bone at its end, similar to a blade. Cephalo are incredibly resilient to gunfire and since most of the parasite's body is outside of the host when it reveals itself, attacking the body is almost useless since it does little damage to the target.