(hex:77) is a glitch item in Pokémon Yellow. It is an unterminated name glitch item.
Using this glitch item with a 0x50 sub-tile early on the screen will result in the game adjusting a long HP bar at the top of the screen (possibly raising it). Outside of battle these tiles appear as letters (like C, L, D, M etc.) but inside of battle they will appear as HP bar tiles. Despite this, since this glitch item is an unterminated name glitch item it may usually be impossible to use it in battle without a freeze.
|This article or section is a stub. You can help wiki by [ expanding it].|