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In Gold, Silver and Crystal, his initial name is ???
In HeartGold and SoulSilver, his initial name is Passerby Boy
Silver (Japanese: シルバー Silver) is almost universally used in fanon as the name for this character, since it is his default name if the player provides a blank name for him in Pokémon Gold and Pokémon Crystal. Despite this, it should be considered that Pokémon Crystal only shares the default name with Pokémon Gold likely due to the former being specifically developed from the latter, as evidenced by development leftovers. Furthermore, his default name differs on other games, which call him Gold (Japanese: ゴールド Gold)S, Soul (Japanese: ソウル Soul)HG, and Heart (Japanese: ハート Heart)SS.
Some fans call him Kamon (Japanese: カモン Kamon) to discern him from his Pokémon Adventures counterpart and an unrelated anime character. This name is taken from the suggested names for Ethan in both the Japanese and English versions of Pokémon Silver; this is similar to some fans calling Blue "Gary", since the name is found as one of the options for the player in international Pokémon Blue and for the rival in international Pokémon Red.
