Ruth from our Fallout fanfic as a mermaid . Just because it's the silliest idea out there and she also has blue hair, usually, so it kinda works. She is od course a shark mermaid, because what else would she be. 

Apparently mermaid are in fashion this month, so this was a pretty easy decision. The redhead might follow, I guess... at some point. I'm rather busy to be honest, but this took way less time than I assumed it would.