Nikka Edvardine Katajainen (ニッカ・エドワーディン・カタヤイネン ?) is a witch of the 502nd Joint Fighter Wing, originating from Suomus. She is referred to as "Nipa" by her friends. Her familiar is an ermine.
Nikka is affiliated with No.24 Squadron, an elite unit of the Suomus Air Force. As Eila Ilmatar Juutilainen is also a member of this squadron, the two are fellow squadron members.
Nikka is something of a tomboy, bearing a boyish appearance and often unladylike manner. She was once something of a delinquent, which has since eased somewhat with the influence of her close friends such as Eila and Hanna Wind. She possesses a very exacting personality which usually splits any situation into right or wrong. While not stupid, she is relatively guileless and often distracted, making her a popular subject for Eila's pranks.
Nikka is based on the Finnish flying ace Nils Katajainen (http://en.wikipedia.org/wiki/Nils_Katajainen ). Like Nikka, Nils had a reputation for frequently crashing his craft, often surviving with only minor injuries. Her nickname, "Nipa," was also Nils' nickname during the war.
