>In the Generation III games, the data for a Pokémon's IVs are stored in a 32-bit integer. For roaming Pokémon, these IVs are stored in a unique place in memory and retrieved whenever the roaming Pokémon is encountered in the wild, so that its IVs remain constant between encounters. However, a glitch causes only the last 8 bits to be transferred from this place[2][3] instead of all 32. Due to this, while the HP IV is unaffected, the Pokémon can only have a maximum Attack IV of 7, and the other four IVs will always be 0. Their Hidden Power type will always be Fighting with a power of 30 or 31.
what the fuck, mr. masuda.