Rain on the Mountain

I actually think that still works with the presupposition that the exhaust port makes sense. Darth Vader, the same guy who destroyed a droid control ship in a vaguely similar way on accident and then spent several years during the Clone Wars probably pulling off similar stunts on purpose, has the experience to look for that kind of weakness. If he had access to the Death Star plans at any point, he probably found that weakness and filed it away for future use. He didn't like the Death Star, Tarkin kept rubbing it in his face that it was going to replace him and there were probably all sorts of internal politics about it.

So my thought is he saw the weakness and, when he saw the Rebellion attacking, hopped into a fighter to go out and join the fight with the intention of "accidentally" popping a couple of missiles down there himself. If he took out the last fighter and made the shot quick enough, the sensors likely wouldn't even have been able to be sure the missiles came from him and not that incredibly lucky last rebel pilot. And even if they could, who were they gonna tell in the 60 seconds or so they had left?

Rebels crushed, Death Star removed, all in one fell swoop.

Given the Nina examples so far, it may just be 'nipples visible because clothing' so see if that's a factor?

Personally I like tails and aquatic animal designs in general when they look like they can move well in water, which generally means SUBSTANTIALLY fewer fins and extra doodads than people tend to give them lol, but that's just my particular favourite style and I also like a variety of others in passing!

I think what bothers me about the animal-in-ass design trope is the combination of attention to detail with a lack of thought given to what those details actually are and do. The gills of a shark are for breathing! Why are you putting them on the tail?? Are there gill arches under there too? What about the digestive system that's behind them? If you're adding the pelvic fins does that mean that's where the character poops from? If you included the belly do they have a shark's giant liver and spiral-shaped intestines in there too? Why did you add that detail if you don't even acknowledge what it means?

So, yeah, wereshark good. Most of those moderately extra-fin guys I'm just confused—government experiment in new control surfaces? but if you add enough fins, my brain says "reef fish—slow-moving, probably venomous, and might stick in place with all those fins"

As for shark in ass, well—that's a relative of the cookiecutter shark, and they latch on to your femoral artery from behind to feed on your fluids. You do indeed have a shark in your ass. (I also took the longest referencing that one, judge me)

Bonus: as far as I can tell, "human with the body of anything from the neck down" is actually a pretty standard "taur" shape, so what if we...?