Iron Island is an Island in the Sinnoh Region with Hot-Blooded trainers awaiting you to battle them. On this Island, you will meet a Pokémon Trainer named Riley. Riley will give you HM04, which contains Strength. This move will allow you to move boulders that wouldn't budge otherwise, but in order to use Strength outside of battle, you need the Mine Badge, awarded by defeating Canalave City Gym Leader Byron.
Riley is a trainer who has studied Human and Pokémon Aura. He also gives you a rare Pokémon Egg that, when hatched, reveals the Aura Pokémon Riolu.
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