>>36193946If they hadn't have made Dark-type and Ghost-type neutral against Steel-type in Generation VI, then a Heatran with an Air Balloon would have
>0 double weaknesses>2 weaknesses (Water, Fighting)>2 neutral damage (Electric, Rock)>6 resistances (Normal, Flying, Psychic, Dragon, Dark, Ghost)>5 double resistances (Bug, Steel, Grass, Ice, Fairy)>3 immunities (Fire, Poison, Ground)Essentially 14 types would be ineffective against Heatran.