ウィルマ・ザ・ウィッチ

She’s always collected and logical, an intelligent type who disdains combat, which is rare for a Witch.
She’s also more mentally mature than other Witches, and as a result also more cynical and introspective. She’s friendly with Tsunuga, and generally acts alongside him, but that’s because their interests are aligned.

Her Brutal Edge is a Western halberd. 

MangaGamer