Argenta

Argenta is the Frontier Brain in charge of the Battle Frontier's Hall in the Johto and Sinnoh regions

Argenta was found with the rest of the Sinnoh/Johto Frontier Brains at a meeting. After the meeting they all went back to their normal facilities. Argenta and Palmer are investigating the pooring communication system of the Battle Frontier. Then a trainer named Platinum decides to challenge the Frontier Brains. Once Platinum defeats Thorton, Argenta slaps Thorton out of his temper tantrum. Later on at the Battle Hall, Argenta is challenged by Platinum. The two trainers battle each other until Argenta's Dragonite is defeated by Platinum's Frosslass.