Morningstar

Morningstar is a Female Fierce-Dog.

Darkness Falls
She was seen dead when Lucky and Mickey discovered her pups: Fang, Storm, and Wiggle. She was not mentioned by name.

The Broken Path
Axe mentions that Storm is one of Morningstar's pups, using her actual name.

Quotes

 * "You're one of Morningstar's pups, aren't you? Yet you're a traitor to your own kind! We Fierce Dogs do not take orders from lesser dogs!"
 * -Axe to Storm about Morningstar in The Broken Path, Page 264