This Abomasnow is a grass/ice-type Pokémon owned by Wulfric.
When the children and the Gym Leaders, including Wulfric, found the Ultimate Weapon in Geosenge Town, they tried to seal it. Wulfric had Abomasnow attack the weapon to prevent its activation.
After the battle was over, Wulfric sent Abomasnow to help rescue people and Pokémon that were affected by the Ultimate Weapon's blast.
None of Abomasnow's moves are known.
Wulfric's Abomasnow (anime)