Tom

Since I am also a sleepy bois inc fan, I got inspired by dark sbi mermaid fanfics and decided to test it out on the Maze Runner and see what it leads me to. So, just a heads up, the Maze Runner characters in this Au are more morally gray because they follow their animalistic side more than their human side. 

In this Au, they in a hierarchy and every mermaid lives in their own pod (a community)

Hierarchy goes like; Leaders, Sirens, Children, Protectors, and Hunters/Gatherers

It is not a requirement to have a Siren in the Pod but it does make the pod seem stronger if they do have one 

There tends to be only one siren in each pod because in this AU they are cannibals and are not afraid of eating another siren from their own pod or a different one 

The color of a siren represents what types of power their voice holds, Thomas in particular has the ability to manipulate people’s sadness and grief, he can make others see hallucinations of loved dead ones or intensify someone's state of sadness/depression/loneliness. The jewelry around his neck is a symbol of his status and showing how important his voice is.

Short plotline; Thomas is a lone siren who does not have a pod. He gets invited to join the Gladers pod by Alby but problems arise when Thomas realizes that they already have a siren in their pod, Ben. At first they would stay far away from each other, with Ben always hanging in the front of the Pod and Thomas in the back but one day Ben does end up attacking Thomas and Thomas ends up killing him. 

Since they run more on instincts and animalistic feelings, Thomas did not really feel bad at first because he did it in order to survive but he soon realizes how sad the pod is since he can feel their sadness. He decides to permanently stay in their pod and promises to protect them as a way to make amends 

In the beginning, Thomas does not have a good relationship with anyone in the Pod except for Chuck and Alby. With him and Chuck having a brotherly relationship and him and Alby having more of a stable one. Gally and him absolutely hated each other but over time they warmed up to each other. Newt, Minho, and Thomas had a distant relationship until Thomas ended up saving Minho from mermaid hunters, which caused him to earn trust from Minho, Newt, Frypan, and Winston. 

Sirens are very different from normal mermaids. They age the same but mature mentally faster than Mermaids. Their diets are very different with them being mostly carnivores while mermaids are omnivores. Mermaids are sort of okay with humans, they especially have soft spots for the human kids but Sirens won’t hesitate to kill one. They are more private about their species and do not let any humans near them unless a human somehow manages to earn their trust. Aris, Teresa, and Rachel are humans that Thomas tolerates but he doesn’t like it when they get too close. Mermaids can not survive without a Pod but Sirens can and they choose willily to join one if they want to, they just tend to do things on their own in the Pod and sometimes listen to the leader which is why it’s important they have a great relationship 

The characters do all act the same as they do in the book and movies, but with just a slight readjustment with their bio instincts. Thomas is still curious and oblivious but now he just has a little bit of animal instincts added to him, this applies to the rest of the characters

Free fee to add in your own headcanons or even make your own story of this. I probably won’t talk about this Au again unless someone asks me too and don’t mind the big ass among us, I just like adding them in my drawings sometimes.