Dulahan golem

A Doll-type Dulahan-class golem, also known simply as Dulahan, is a golem of Ximi design. Its full Ximi name is Golemus Ordumnisemani Yagumdulahani.

A golem is any autonomous artificial construct.

Since the dulahan golems' heads have their own soul gems that power them, they can go away from the body for a long time before running out of energy. The heads can also be used for combat, such as if elemental conduits are built into them.

The dulahan's central soul gem is in its body, meaning that destruction of its head won't kill it.

As they operate on soul gems, which in turn use souls, you could bind the spirit of a greatly dexterous warrior to one and input into the golem, making them nigh immortal, as long as the gem doesn't get destroyed or goes empty.