So, I pointed out before that the names of the primal mounts are taken from some form of mythology or are a reference to something:

Garuda: Ancient City
Ifrit: Greek Mythology
Titan: Norse Mythology
Levi: Irish Mythology
Ramuh: This one shares names with several things, mainly several star constellations.

I did a quick google search on horses related to ice, nothing came up but it wasn't a thorough search. Then, I came across these names:

http://en.wikipedia.org/wiki/List_of....2C_and_Winter

After browing through the pages for each link real quick, my thoughts for a name would be something of the last two (Ymir, or Yuki-onna).
Some of these have a story behind them that's a little more...chilling than others. Such as a man who kidnaps children (I don't think that would be a good choice). As for Ymir, there seems to be little relation to ice there.

Now, as for Yuki-onna, this, according to the wiki page, is a female figure from Japanese Folklore. Shiva, being female obviously, and the company being Japanese (obviously), I feel this name might be quite fitting.

I am really looking forward to finding out where the name comes from. What are your thoughts on the current names? Any thoughts on a more appropriate name?