Heaven Bound discussion

After heaven closed it's gates and demons began taking over the earth, the seven sins created monsters to aid in Hell's battle. When heaven reopened it's gates, the 10 virtues created counter monsters, ones that were meant to aid rather than destroy. But not all that is bad stays bad, and not all that is good stays good.

Sirens
Sirens are aquatic creatures with tails of sea serpents and the upper body of a human. Naturally, they have wiry hair, sharp facial features, pointed ears and teeth, long claws, and rotting skin. But they can hide these features and appear very beautiful. Their song is enchanting and can take control of the listener. They pull their victims

Mermaids
Mermaids are the counter to sirens. Unlike sirens, mermaids are naturally beautiful with very soft features. Their tails are more similar to a fish's. Their song is healing in nature, similar to an old version of the Rapunzel folk tale that was written by someone named Disney. They aren't aggressive and tend to avoid conflict.