He was named after the Caspian Sea

Cas

Protagonist

16

Male

He/him

Panromantic/Asexual

Stormy sea-grey

Dark auburn

Either in a ponytail or in a messy bun

5'8"

143

Olive

Oversized hoodies, jeans or sweatpants

Long jagged scar across his nose, silver manta ray necklace that he never takes off

N/A

Siren

Spanish-Irish

Swimming, studying, very intelligent, being incredibly observant, blending in, eavesdropping, finding hidden objects (no one stands a chance against him at scavenger hunts), singing although he's very self-conscious about it and only does it when he thinks no one else is around, playing the piano and violin

Siren song (he rarely uses it unless he feels threatened/it's a life or death situation), aquatic breathing, and he also has the ability to grow a long, magnificent mermaid-like tail when swimming (his hands also become webbed and gain razor-sharp claws), above-average night-vision

Introvert

Summer

Yes