1. Weavile
Weavile is the fastest non-legendary. if you were to super train its base attack, I don't know what might come out of it.
2. Avalugg
A giant ice turtle. Well i think that's enough of a description.
3. Mamoswine
This Pokemon helped in Soulsilver. I used him all the time, and time after time, he saved my sorry butt.
4. Glaceon
Eeveelutions.
5. Aurorus
An ice-rock dinosaur. I kind of regret choosing the Jaw fossil.