This Arcanine are two fire-type Pokémon owned by Ramona.
Keegan and Ramona had three Arcanine, from which one was Keegan's, nicknamed Arcky. The Arcanine served as mounts when they were transporting Fire Stones. When the heroes were in trouble, the Arcanine saved them, then transported them to safety. Ash was impressed, so Keegan gave him instructions how to ride one. Once Team Rocket stole the stones, the heroes, Ramona and Keegan split up. Misty, Brock and Ramona found a bag, but fell into a trap made by James. Once Brock used Onix to get out, they went after Ash and Keegan. They managed to track down Team Rocket, who wanted to escape. Team Rocket tried to escape, but Arcanine used Fire Spin to burn the balloon. After Team Rocket were defeated, the Arcanine transported Ramona and Keegan to the city, where they gave the Fire Stones away.