ニッカ・エドワーディン・カタヤイネン

Nikka Edvardine Katajainen is based on Finnish ace Nils Katajainen. She is attached to No.24 Squadron, an elite unit of the Suomus Air Force, and is a fellow squadron member of Eila Ilmatar Juutilainen.

(Source: Strike Witches Wikia)