There isn't just one "251" hack; several creators have made their own "Perfect" versions: Pokémon Perfect Fire Red

| Pokémon | Location / Method | |---------|-------------------| | Mew | Given as gift in Vermilion City (Pokémon Fan Club) after certain conditions OR hidden in a cave (varies by hack version). | | Celebi | Found in Berry Forest (Sevii Islands) or via Ilex Forest event recreation. | | Raikou, Entei, Suicune | Roam Kanto after obtaining the Pokédex (like legendary beasts in G/S). | | Ho-Oh | Atop Navel Rock (Sevii Islands) – requires item or event flag. | | Lugia | Inside Navel Rock (lower floor) – requires item or event flag. | | Mewtwo | Cerulean Cave (same as original). | | Articuno, Zapdos, Moltres | Seafoam Islands, Power Plant, Mt. Ember (original locations). |