Biograft [PHIGHTING!]

Biograft is a robot made to kill, and as such it is devoid of any notable personality. Most of its dialogue and exchanges with other Phighters consist in it either speaking its orders out loud, stating its own existence or criticizing their combat methods. Despite this, Biograft is shown to express curiosity, a sense of self and even worry in some interactions, showing that it is not devoid of any emotion whatsoever. (Credits to the official wiki.)