Similar to you interest in the blonde maid in episode 1, I have always been fascinated by the door guard on the ship in episode 5. She was assigned to guard the door but probably didn't think it was too difficult or dangerous of an assignment. After all, how could someone get on board. She's probably lost in thought. Perhaps just day dreaming or maybe even having a little sexual fantasy.
She stands diligently at her post not knowing danger is coming in the form of Najica climbing up the side of the ship. The poor girl only has time to see Najica, turn and let out a gasp of shock before Najica coldly blasts her with her stun gun. She's out cold before she even hits the deck. Also, Najica gets her right in her boob which probably means it is a bit more painful for her than if got her somewhere else.
I always thought it would be fun to know something about her. What was her name? How did she become one of the ship's sailor girl henchwomen?
I would also have been interested in seeing her discovered. Najica obviously took her uniform thereby leaving her in her bra and panties and probably gagged her tied her up. Where did she hide the body? When was she found and by who?
I also wonder about the effects of Najica's stun gun on her. As far as I know the show never explains how the stun gun functions. We see waives when it strikes the victim. However, it is a energy bolt or is there some kind of projectile in it?
Also, what is its effect on the victim? There is obviously some degree of pain as the guard lets out a cry as she is stuck. Also, there is some force to it as we see the girl's shirt pull up as she is hit.
Whatever it does to knock out the target it obviously works very fast. By the time the shock wave has cleared, she appears to be completely and totally knocked out. Given the lack of movement, she is clearly totally gone by the time she hits the deck.
How long does the effect last? Will the girl come to in a few minutes or will she be out for many hours? When she does wake up will there be any lingering effect like pain where she was hit, will she be a bit disoriented, will it take a bit of time for her to recover? Will she remember seeing Najica and being shot or will she have no recollection of what happened to her?
To your point about Najica, she probably doesn't care about the victim as long as she it taken out and not in Najica's way.