Ikumi Nishio

Akira and Rina's grandmother. The professor of the ALVIS, she once developed the prototype Zero Fafner. However, during its first test, her daughter and her son-in-law were assimilated. Shocked after, she retired from her works, though still giving advice to the young personnel of the ALVIS. Currently, she runs the grocery store and is taking care of her grandchildren.

(Source: Alvis)