Aron helped Steven in searching the rare stones at Granite Cave. Steven took a break and heard a scream from the cave. Aron followed Steven through the tunnels. Eventually, Steven encountered Max, Meowth and Pikachu, who reported more people were lost in the tunnels. Steven took them to a part of the cave, where they found Ash, Brock, May, Jessie and James, asking them to go towards the waterfall, where they would meet up. The group came to the waterfall and was surrounded by Aron. Fortunately, Steven had his own Aron calm them down by using Roar and the Aron dispersed. After Team Rocket blasted off, Steven took the heroes to a part of the island where they may train. Steven, however, bid them farewell, as he sailed away with his Aron.
Steven had Aron push some rocks at the ruins he was studying.