I love icy creatures! I had to look through my old stuff to find some good ones. The firs one is a Centaurion, a very large, birdlike creature. It likes to sit in cold water and befriend many species that are normally violent. I suggest that you put it in water, maybe in a deep valley so you can see it close up if you walk down to it. Here it is:
Here's another one: the Aquadocks is a violent arctic hunter that eats mostly fish, but will prey upon anything smaller than itself. It seems to dislike intelligent creatures, and will attack them if they stray too close. They have an unusual friendship with the Centaurion.
Here's the link to get to them: