Bjorn

Bjorn is/was (it is unknown if the character is still alive or deceased) a snow bear made with Elsa magic.

History
When leaving Library of Lost Things Elsa created an ice sleigh and Bjorn to pull it. The bear finished the task by transporting Elsa and Anna to the waterfall that is an entrance to Earth Giant's Passage, bid them goodbye and ran to help Kristoff fight with Sorenson possessed by the Nattmara. It is unknown what has happened later.

Personality
Bjorn is/was loyal and brave, ready to sacrifice his life to protect Elsa, Anna and Kristoff.

Abilities

 * Strength
 * Speed
 * Endurance
 * Jumping very far even when pulling a sleigh

Elsa
Elsa created him and gave him life. Bjorn was ready to risk his life to protect her.

Anna
Bjorn was ready to risk his life to protect her.

Kristoff
Bjorn risked his life to help Kristoff fight with the Nattmara and possessed Sorenson.

Books

 * Frozen II: Forest of Shadows