This Regice is an ice-type Pokémon owned by Candice.
Candice used her Regice and her Regirock in a battle against Hareta and his Lucario and his Luxio to test his skills. Riolu wanted to help Luxio but Regice used Ice Beam, freezing Riolu in place. Regice was knocked out after Riolu evolved into Lucario and emerged from the snow, defeating Regice. Candice later used her Regirock, Registeel and Regice to awaken Regigigas in the Snowpoint Temple. When Regigigas woke up, it started to attack the three Regis, knocking them out.