The Carmanite Golem is an iron golem found only in Dark Towers. They're the same size as a regular iron golem and the same texture, only having a "Work In Progress" (WIP) sign on their chest. They will become hostile to any player that comes near them.
The Carmanite Golem has the same attack style as a regular golem, only that they will attack any player that comes close to them. They are currently a work in progress and we might expect more attack styles from them in the future.
They are currently only found in Dark Towers, spawing from a mob spawner. The Carmanite Golem spawner is the most common mob spawner found in any Dark Tower.