Just because they used the word 'Lycanthrope' doesn't mean they can only use greek inspired mythology. Werebears appear in Norse and Native American mythology.
EDIT: Also, the people who think werebears are stupid/silly. Why is it that a man that turns into a wolf is awsome but a man that turns into a bear is stupid. This attitude of 'they'd be the same, just reskinned' shows a lack of imagination. Werewolves are fast, agile and constantly attacking. Werebears could be all power and brute force, tanks. Maybe more defensive than the wolves attack perhaps. The wolf has howl of terror that makes enemies flee. The bear could have a roar that stuns enemies or knocks them back, maybe paralyzes them.


