This Glaceon is an Ice-type Pokémon owned by Virgil.
After the heroes came to Virgil's house, Virgil sent his Pokémon, including Glaceon, who was a part of his team. During Virgil's mission, Glaceon used Icy Wind to create a key to unlock a locked door, combined with Umbreon's Psychic. Once Cryogonal started attacking, Glaceon fired Ice Beam and along with Umbreon's Shadow Ball, managed to dispel Cryogonal's Light Screen.
Glaceon defeated a Reuniclus in the third round of the Vertress Conference by using Blizzard, allowing Virgil to progress to the Top 16. Glaceon was also used off-screen in Virgil's quarter-finals battle against Russet.