Other, less common examples:A dark-poison type holding an air balloon will be weak to nothing until it pops. A bronzong with heatproof and an air balloon will always take neutral damage or less. A metagross or jirachi with an air balloon in the rain or a bronzong with levitate in the rain will take the equivalent of neutral damage from all attacks, though fire type attacks will still be stated as super effective. If a water-ground type is skill swapped the ability sap sipper, then it will have no weaknesses. If a bug/ steel type or a bronzong with levitate is skill swapped the ability flash fire, then they won't have weaknesses. A dark-poison or electric type skill swapped levitate has no weaknesses.