Jogorou Furuya

Age: Unknown (Over 100 years old)
Gender: Male   

Height: 118 cm (3'10")
He is Chihiro's grandfather, who suffers from breaks of dementia. It is later revealed that he used to be professor, who was leading research about zombies alongside Darin. His case of dementia is revealed to be infact due to the fact that he received multiple times the lethal dosage of the zombie venom during his days as a researcher.