Iron Golems have always protected the Villagers of the Overworld. Their numbers are dwindling as a result of the Arch Illager's war. https://minecraft.fandom.com/wiki/Minecraft_Dungeons:Iron_Golem

This texture MCD is way different than the regular MC It has the dark green leaves and the dark colors on the iron golem body

if you want to get the real iron golem size from Minecraft dungeons you can get it from here https://www.youtube.com/watch?v=wx3cg1ZSBr0&t=29s