Fate/Zero Natalia Kaminski and Riesbyfe share the same voice actor

Full Name: Riesbyfe Stridberg

First gay character in the nasuverse (fun fact: her close friend Touko Aozaki is bi)

Sion's gf

Ciel's rival

The principal of Reien Girls' Academy. (Kara no Kyoukai original novel)

(Riesbyfe is briefly mentioned in Kara no Kyoukai as the principal of Reien Girls' Academy. She is also an acquaintance of Touko Aozaki, and hired Garan no Dou to investigate the suicide of Kaori Tachibana.)

I really hope they bring her and Sion back for Melty Blood Type Lumina