Monster Musume No Iru Nichijou Episode: 7

Reviewers from Reddit note that while she appears dangerous, she is actually the most "self-aware" and protective, often drawing clear lines on where to stop her teasing.

A dual-wielding gunner who uses her immortality to tank damage that would kill anyone else. Monster Musume no Iru Nichijou Episode 7

Help you find or figures of the MON squad Reviewers from Reddit note that while she appears

In a rare move, the heavy-metal M.O.N. theme "Hey! Smith!!" is used as the opening song for this episode only, while the standard OP becomes the ending theme. Monster Musume no Iru Nichijou Episode 7