From Bulbapedia, the community-driven Pokémon encyclopedia.
Glacine (Japanese: ヤジン Yajin) is a character who appeared in White—Victini and Zekrom and Black—Victini and Reshiram.
She is the leader of a tundra village that Damon eventually travels to during his quest for support from the People of the Vale. Initially, she did not support Damon's goals, but when he rescued her and some of her people from a giant iceberg using his Reshiram and Reuniclus or Zekrom and Gothitelle, she changed her mind, along with the rest of the village. She was later seen in Mannes's home, voicing her support for Damon, and again in the ending credits, where she helped rebuild the Kingdom of the Vale.