Iron Golem

Iron Golems are often the toughest kind of Golem and the enemy with the highest defence in any given Castlevania game.

Castlevania: Circle of the Moon
Iron Golem is the third boss in Circle of the Moon, and guards the Kick Boots. He advances slowly, occasionally pausing to pound the ground, which releases gears from the ceiling. Iron Golem also heals himself, and fires a spark that causes massive damage. He is one of the easiest bosses in the game.

Castlevania: Aria of Sorrow
In Aria of Sorrow, Iron Golem has 9999 HP and its defense is so high that all attacks will only do 1-2 HP of damage. Since even the Valmanway would take an impractically long time to kill him, it is fairly clear he requires unconventional tactics to defeat. Luckily, his hidden weakness is having just 1MP; therefore, using the Killer Mantle Soul will swap his 9999 HP with his 1 MP while simultaneously delivering 1 HP of damage, killing him in one hit.

As the other golem enemies, its attacks are kicking rocks and a short uppercut. It moves slowly, and unaffected by Chronomage soul.

Castlevania: Dawn of Sorrow
As with the Iron Golem in Aria of Sorrow, the Golem takes 1 HP of damage per hit. However, this time around, his health has been reduced to 50 HP.

His attacks are a punch, a kick and fire breath. To defeat him easily, use Puppet Master or Bat Company to get behind him, as he can't turn around. Because the strength of the weapon is irrelevant, it is recommended to use a weapon that attacks quickly, such as the kaiser knuckle, or the nunchakus.

Another strategy is to use the Imp bullet soul which converts all damage dealt to MP damage during its timer. The Iron Golem dies when it reaches 0 MP, so you can activate the soul twice and use the Handgun to stay at a safe distance while picking the Iron Golem off.

Castlevania: Portrait of Ruin
In Portrait of Ruin, the Iron Golem only appears twice in the Nest of Evil. The defense is lowered incredibly compared to the older Iron Golem variants, but still retains its fire breath, kick and arm thrust attacks.

Castlevania: The Adventure Rebirth
He has fairly low health and defence compared to his previous incarnations, but after being defeated, rather than disappearing, he slumps forward and can still damage Christopher if he lands on him or he walks into the beast. Iron Golem's lifeless body can be destroyed to clear a path, however.