Sorry for the lack of art, I've been really busy with school but I'm working on a few things now
In the mean time, here are the entity/human theme songs

Damien:
Wires - The Neighborhood

Chris:
Why Worry - Set It Off

Zaiin:
Badly Broken - Get Scared

Micah:
The Mystic - Adam Jensen

Ruth:
Do Better - Say Anything

Melody:
Teen Idle - Marina and the Diamonds

Tuffy:
Sippy Cup - Melanie Martinez

~Aly