You have pristine white fur, granting you advantage on stealth rolls in snowy environments (or in locations that are predominantly white).

Chomp chomp baby

Use those giant lungs for evil (or good, if that's your thing). Once a day, you can summon all your primal rage into one ear-splitting roar directed at a target of your choice. The target must pass a DC 13 Wisdom saving throw or become frightened of you until the end of its next turn.

Your strength score increases by 2.

This polar bear is medium, making it between 6'6" and 7'6" tall and 600-800 lbs.

You have a 30 feet walking speed when bipedal. As a bonus action you can switch to all fours, granting a walk speed of 50 feet. However, you cannot hold any items in your hands and cannot make weapon attacks while not bipedal.

You can speak, read, and write Common and can communicate with bears.