Slate

Appearance
Slate was a mostly gray female wolf with touches of brown.

Personality
Slate liked to explore, sometimes dragging Copper or Coal with her, and normally explored away from Sol after talking to him briefly. She liked to pretend that she was going to tackle her siblings, but rarely ever did.

Gold
Gold got regularly annoyed at Slate and realized this was why she was so annoying to her parents. However, she struggled to reach her when there was a bear about to kill her. She failed but still felt guilty about it despite their bad relationship.

Cloud
Cloud also was regularly annoyed at his pup but defended her when Gold was away. However, he barely took note of her absence and either acted like he hadn't noticed or hid his emotions well enough to let Gold believe so.

Sol
Slate and Sol didn't hang out much for the short time that Sol was alive. They play-fought a few times but beyond that never had a good family relationship. They may get along better now in death, as Slate did feel guilty for not trying to make a better relationship with her brother when Sol died.

Copper
Copper was always slightly hesitant to follow Slate but did so anyway. Most of the time she would branch of slightly onto her own path, but always stayed near Slate. When Slate died, Copper tried to run away down the mountain in her grief and fear of the bear. She was quickly put back, but she kept trying to leave.

Coal
Coal usually followed Sol, but sometimes Slate would drag him away to follow her. Sometimes he would be able to slip back to the den before he got in trouble with Gold and Cloud, and occasionally even told on her, earning him the nickname of "taddle-tail" by Slate and Copper.

Death
Slate was killed by a bear when Gold was collecting more food for her and her siblings.

Trivia

 * Slate is a rock, a creek, and a color.