I won a Mythical Symph slot during the Wishing Well event, and spent like two weeks deliberating over what I wanted. Finally knocked out this boy, and he just got approved~!

Aahan

Song
Akatsuki no Requiem - Linked Horizon

Traits
Octavist (Myth)
Large Wings (Myth)
Large Horns (Myth)
Venom (Myth)
Transparency (Rare, Pouch)
Back ridges (Uncommon, combined with Non-Solid)
Non-Solid (Rare, combined with Back Ridges)
Aura Trail (Rare, smoke wisps)
Extrusions (Uncommon, snout horn)
Large Fangs (Halloween Common, pointy teeth)
No Pupils (Halloween Common)
Monster Limbs (Halloween Uncommon, batlike forearms + sharp toes)

Info
Aahan is a quiet Symph with strong protective instincts (despite his somewhat spooky appearance)
He is the leader of the choir containing Boötes, Roucous, and Sussel!
Aahan adores children, and has been known to sneak them treats when he thinks no-one else is looking
He raised Sussel, and also considers Roucous one of his children
Aahan can, and will, adopt you.
He's nocturnal, and likes to watch the sun rise before going to sleep
He/Him, but also accepts They/Them or It/Its