Neil Fisher/biology

Unlike previous victims of Uroboros, Neil successfully bonds with the virus, enabling him to maintain his intelligence. However, his body is vastly mutated into an entity resembling a Tyrant, albeit significantly more muscular. His most notable feature is his right arm which has transformed into a massive tentacle which can extend several feet to ensnare players. This tentacle is similar to the one used by Uroboros Mkono. His left arm remains mostly intact, although it has exposed his muscles and fragments of bone have emerged from his shoulder.

Although Neil's mutation increases his strength and speed, he develops the two weaknesses of Uroboros mutations. The pustule-like organ on his chest serves as his main weak point and sufficient damage will incapacitate him. He also develops a vulnerability to intense heat. Prolonged exposure to fire or light will cause him to overheat and he will attempt to find a source to cool him down. Overheating him will also expose his core.