Nikuma

Nikuma (or Big Ma'am) is a burly woman and the best strategist of Athos according to Teresa. The Qwaser of Stigmata (聖痕のクェイサー, Seikon no Qwaser). She's the strongest tactician of the Athos. She is a strong muscled woman who wears a nun uniform. She has a military attitude and is harsh in her methods, but despite this, she has the best intentions.

Referred to as "Hell's Dairy Cow" by Teresa, she is a master tactician and trainer for the Qwasers of Athos.

A Night of The Communal Hot Spring 2 - I Was Surprised When I Sucked It
Season 2, Episode 11 Airdate: June 21, 2011