The octopus is the uplift most different from humanity. In a wild species, as much as two thirds of an octopus' neurons are located in their limbs. In uplifted octomorphs the size of the primary brain is increased, but half of their neurons are still located in their limbs. The tentacles of octopuses and octomorphs therefore have a significant degree of autonomy, capable of grasping and feeling on their own initiative. The semi-autonomy of these limbs has led to the development of one of the most unique martial arts in transhuman history.
Domesticated limb is treated as an Unarmed Combat specialization, active whenever the user is in a octomorph.