Vice-Cardinal Ferdinand Daxus is the leader of the world government.
He is introduced explaining the anti-hemophage weapon. He next appearance is where he confronts Violet over the theft.
After Violet escapes, he leads the assault against the hemophages. After his men are killed, he enters an office room and kills 3 hemophages while avoiding spilling a coffee cup filled to the top.
After Violet rescues Six from the other hemophages, she confronts Daxus over a hologram mobile phone. Daxus tells Violet not to assault the arch-ministry as he has over 700 soldiers stationed there.
In the film, he is shown as a hemophage who avoided detection. In the novelization, he is not a hemophage.