Manabu Yuki - Mer 


Traits: 

*Long eel-like tail instead of human leggies
*Though he can still breathe air, he's more adapted to aquatic life (aka an emphasis on gills)
*The ability to hypnotize others
*Paralytic fangs
*Scales on not fish parts
*Extra fins because yolo
*The ability to charm through kissing
*A sensitivity to vibrations in the air/ground/water

Extras: 

*Bioluminescent markings (that may or may not look like a galaxy)
*Features combining the barred moray eel and the ribbon eel
*Sharp claws
*Enrapturing singing voice