Final bosses

world 1: black bird

location: desert

world 2: piggette

location: water kingdom

world 3: klaus

location: science lab

world 4: corpral pig

location: battlefield

world 5: victor

location:  military base training field

drops: yellow key

world 6: prince pig

location: prince pig's castle

world 7: adam

location: Death Star

drops: blue key

world 8: piggy mccool

location: pig base

world 9: darth vader

location: castle

world 10: king pig

location: imperial castle

drops: red key