Perceived robot identity has not been discussed thoroughly in Human-Robot Interaction. In particular, very few works have explored how humans tend to perceive robots that migrate through a variety of media and devices. In this paper, we discuss some of the open challenges for artificial robot identity stemming from the robotic features of voice, embodiment, and autonomy. How does a robot's voice affect perceived robot gender identity, and can we use this knowledge to fight injustice? And how do robot autonomy and decisions affect the mental image humans form of the robot? These, among others, are open questions we wish to bring researchers and designers’ attention to, in order to influence best practices on the timely topic of artificial agent identity.