Use "Zerozelock" to protect this monster when you have no other Fiend-Type monsters on the field.
Use the effect of "House Duston" to special summon to the field, 4 Duston monsters on either side. Not only does this produce a 8000 attack point monster but it also has the potential to lock down your opponent's monster card zones from being utilized.
After this card is Special Summoned (via "Monster Reborn", etc), if its ATK doesn't exceed 1000, you can chain "Inferno Reckless Summon" to Special Summon another 2 "Goblin Kings". Neither of them can be attacked and they will have at least 2000 ATK each because of their effects.