Stone Golems and Iron Golems are level 3 creatures of tower. They are recruited from golem factory.
Stone and iron golems are built and animated through a process involving both precise craftsmanship and complex magic. Though slow, they are strong and durable combatants. Stone
golems take half damage from spell attacks, while iron golems take only a quarter of such damage.
Discussion
With their low cost and natural magic resistance, Stone and Iron golems are effective castle defenders. They also can serve as early game protectors for your Master Gremlins. But for the most part, they are one of the less helpful tower creatures, and if you're saving gold for any reason you can skip buying these creatures weekly, or even upgrading your workshop.