Cerulean Cave B1F Wild Encounters Cave Lv. 65-70 Venusaur 10% Tyranitar 10% Mamoswine 10% Infernape 10% Crobat 10% Aegislash 10% Gogoat 10% Lucario 10% Metagross 10% Vanilluxe 10% Surf Lv. 65-70 Milotic 15% Kingdra 15% Basculegion 15% Gyarados 15% Lapras 15% Walrein 15% Swampert 10% Special Encounter Lv. 70 Mewtwo 70%