Yeti

Yeti, a character in the Endless Summer series, is the mountain guardian. She is first seen in Book 2, Chapter 11.

Appearance
The yeti appears to have a polar bear’s head, a ram’s horns, glowing blue eyes, and black fur around the eyes.

Fox (Furball)
The yeti seemed to treat the fox as if it was her child, but this feeling wasn’t mutual at first because she kidnapped him. If Quinn tamed the yeti, Varyyn will notice that she was grooming the fox to become her successor as the Mountain Guardian.

Quinn
The yeti first thought Quinn was threatening the fox and charged towards her. Quinn responded by telling her to stop, and she obeyed. This revealed Quinn’s ability to tame the yeti, and letting her do so results in the yeti offering Quinn and your character to ride on her to Lake Tethys. Upon reaching their destination, Quinn called the yeti friend as she nuzzled her snout.

Trivia

 * Jake's nickname for the yeti is Kongzilla, a portmanteau of King Kong and Godzilla, because of her immense size.