Look ok one of my other favorite AU's is sirens/mermaids. I don't know if we want them to both be it or one or whatever. But I just need to state this for the record because I have thoughts and opinions.
Wade's a mer sure but like the kind of mer who can turn human. So he's a member of the ship/crew as far as anyone is concerned. But either Logan knows (found him one day and took him in) or he finds out (something goes wrong and Wade saves him)
Anywheres their relationship is good and everything but Wade always wants to do everything in his other form because it's more natural. And Logan is a kinky fuck
So I don't know what should be funnier Logan knew before whatever catastrophe or he didn't know. And then of course the relationship.
I have no idea what would be funnier or better. But how were the mechanic work Is it just being submerged in water I feel like that's the best one.
If he didn't know I feel like it would be Logan almost drowning because despite being on the water at all times he hates it. And Wade just cannot allow him to die. Maybe they were aboard the X-Men ship or something and Wade takes him away. They create their own crew a better one become pirates or something.
And then every few days or so they sneak off and their crew is wondering what the deal is (The deal is fish sex).
Maybe Logan's mutated so Wade doesn't feel so alone in being different... Maybe that ends up being their whole crew misplaced misfits
They have sex daily without question but both desire it in a more baseline instinct driven way too. They need to fight, claw, and bite I've another and Logan has to learn real quick to like the water. Because Wade will half drown him maybe it's some suppressed instinct to kill and maim.
(Fish (like)/aquatic creatures be fucked up)
One day one of the crew members follows and thinks genuinely that Wade is trying to kill Logan. This is not the case but they definitely think this. (Do they stay or run back to the ship I am unsure both are equally funny)
Wade who is doing him damnedest to pin Logan under him through any means necessary. Logan who still fucking hates water and is fighting ferociously to not be pinned and drowned.
Some poor sap who's watching the two heads of their crew try to 'kill' one another. Wade wins if he kills him and Logan will come back to Wade having his way with him.
(They had a long conversation about this years ago)
If Logan wins he gets to do what he wants to Wade.
It's a good deal and it's about an even split who wins each time. Logan hates drowning though but it has become his least hated way to die.
He doesn't always die of course. Sometimes he just manages just to subdue him. But he dies as often as he does because he refuses to give up the fight.
Wade loves wrapping his tail around Logan tangling them together while they lay there in the afterglow. It's a fight every time to detangle them to get back to the ship.
After the crew know Wade sometimes will just swim alongside the ship while they travel. Maybe some legend starts off of I sea monster following them around.
No one knows and they crew isn't talking. Someone somewhere gets the idea in their head that they could hunt down the sea creature. This does not go well for them
Okay so they either come back to everyone holding spears/guns and pointing it at Wade. Or The man is not believed and told to fuck off
The people on board know Wade is like them he has razer sharp teeth and his fingernails are claw like. But no one knows exactly what his deal is and the rule is you don't ask. Maybe his tongue is a but too long 🤔 (for wholesome reasons of course definitelynotforsexualstuff)
They're pretty much all some kind of mutant or mutate or something. So they all kinda shrug it off. No one asks what anyone's deal is and everyone just kinda goes along with it
It's the opposite of mutually insured destruction. You can't rat out if you don't know. The only hint they have besides the visible stuff is the fact he always smells like seaweed (smell idea courtesy of @orcadork4ever)
Many a time have the crew caught Wade teasing their captain with it. Their captain who is watch the man with dark wanting eyes.
While Logan was the captain Wade was second in command and was pretty much Logan's equal. They had formed this new crew together and were closer then many first thought possible.
Logan was aloof and distant but with Wade he was practically mush in his hands. It was shocking at first but it's soon become the normal state of things.
They probably get told about mutants or creatures being held against their will. And go out of their way to make sure that they free them all.
A new member of the crew is welcomed aboard and it's a shock. All the personalities who seem to somehow get along with each other even though they're nothing alike.
I'll run by a distant captain who seems like an absolute bastard and who many horror stories have been spun about. They act like he's some kind of Boogeyman who comes in slaughters hundreds before running off once more.
And his second in command who could not be any more opposite. Except for the fact that he's just as terrifying though it's not first apparent.
Then you get to see later that day the two of them in a corner in the boat flirting. Because that has to be what it is. What with Wade plastered to the Captain's front and One of his hands creeping down Logan's lower back to grab at his ass.
And the captain is just allowing it fuck he's blushing and leaning into the other man. He's even purring purring as he raises his own hand to cup the other's nape.
(That's all I got right now)