April 03, 2020, 01:34:21 am
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(hex:A1) is a glitch item in Pokémon Yellow. It is an unterminated name glitch item, and a Rival's effect glitch item.
When a 0x50 sub-tile is early on the screen, this glitch item functions as an evolutionary stone but the Pokémon which are compatible with it are unknown.
Otherwise, without suitable screen data this glitch item may cause the game to freeze.