Heatran @ Leftovers  
Ability: Flash Fire  
EVs: 252 HP / 176 SpD / 80 Spe  
Calm Nature  
IVs: 0 Atk  
- Magma Storm  / Lava Plume
- Stealth Rock  / Protect
- Taunt  
- Toxic  

Heatran @ Air Balloon  
Ability: Flash Fire  
EVs: 4 HP / 252 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Magma Storm  / Lava Plume
- Stealth Rock  
- Earth Power  
- Taunt  

Heatran @ Choice Scarf  / Choice Specs
Ability: Flash Fire  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid  / Hasty / Naive  Nature
IVs: 0 Atk  
- Overheat  
- Flamethrower  
- Flash Cannon  / Ancient Power / Hidden Power Ice / Stone Edge
- Earth Power  / Explosion / Flash Cannon