Frost was presented with a few options for the wolves.
Alpha Frost wolf, E-rank 250DP: an upgrade of the frost wolf caste, larger and faster with great leadership traits. More cunning and strategic, the more wolves they command the stronger the pack becomes.
Dire Frost wolf, D-rank 550DP: rank up from the regular frost wolf, far larger and faster almost rivalling that of a polar bear. Still a pack animal that travels in groups, making them far deadlier if amongst their own kind. Its claws and fangs naturally exude ice chakra that burn their targets like a venom. Their pelts are tough and can block most weak weapons and they come with a roar skill that can send fear into their enemies. Overall, they are fast, agile, deadly, and cunning, very dangerous enemies even for the most adept of adventurers.