Here's my reference of Volcano the Kumiho/Gumiho

Race: Kumiho/Gumiho (I just look like a wiki they both means same thing) and part Dark Angel
Age: over 4000 (appears 18)
Height: 5'9 or 5'10 (Furry 4'5)
Weight: 210 lbs
Tails: Nine total can sometimes merge into one big tail
Element: Fire/Dark
Alt. Form: Furry, Feral, Wing (part of Dark Angel)

Have a scar mark on the left arm.

Volcano can form into two genders since he's a kumiho to allow him to do some trickery and play.