Story list will contain spoilers.
Heroes
Currently, only stories that are at least partially written are counted for appearances

Seo-Yun
Gumiho
300 years old
Appears in:
Lone Fox
Lone Fox 2
Lone Fox 3
Chosen

Yuki
Nogitsune
800 years old
Appears in:
Lone Fox 2
Finding Avalon
Black Fur, Black Heart
Chosen

Reverie
Human, modified
20 years old
Appears in:
Alone
Hunting Grounds
The Other Side

Merielle
Selkie, Unseelie Fae
Age Unknown
Appears in:
Finding Avalon
Black Fur, Black Heart
Chosen

Akari
Zenko Kitsune
800 years old
Appears in:
Finding Avalon
Black Fur, Black Heart
Yuki’s sister

Samantha
Human
30 years old
Appears in:
Lone Fox 1
Lone Fox 2
Lone Fox 3
Chosen

Celeste
Unseelie Sidhe, Exile
? Years old
Appears in:
Lone Fox 1
Lone Fox 2
Lone Fox 3
Chosen

Kida
Kitsune
80 years old
Appears in:
Sacred

Marissa
Human Druid / Sorceress
18 years old
Appears in:
Sacred

Sophitia and Cassandra
Nogitsune
1000 years old
Appears in:
Sacred
Lone Fox 2
Black Fur, Black Heart
Chosen

Astaria
“Delphyne”
Daughter of Karakostras
Appears in:
Lone Fox 2
Lone Fox 3
Chosen

Inari
Goddess of Prosperity
Patron Goddess of Kitsune
Eternal
Appears in:
?
Villains

Mordred
The First Vampire
2000 years old
Appears in:
Lone Fox 2
Finding Avalon
Black Fur Black Heart
Chosen

Levinson
Human, modified
40 years old
Appears in:
Lone Fox 1
Lone Fox 2
Lone Fox 3

Ilya Petrov
Human, modified
58 years old
Appears in:
Lone Fox 2
Lone Fox 3
Alone

Tanya Petrov
Human, modified
22 years old
Appears in:
Lone Fox 2
Lone Fox 3