Iron Golem

Iron Golem is a naturally occuring mob in Minecraft. It spawns in villages if there are present villagers under certain conditions. The Iron Golem attacks surrounding monsters and can thus protect the villagers from zombie attacks.

Loot

The iron golem likes poppy flowers and has a chance to drop a poppy as loot.

Summoning

Not only can the Iron Golem spawn naturally, but it can also be summoned using four blocks of iron and a carved pumpkin in the formation of a wither.