Cubemo
Cubemo is a Cozmo only capable of connecting to cubes. It is a Adafruit Feather nRF52840 Sense running modified Cozmo firmware to make him compatible.
Cubemo was designed as a brain tumor for lrdsnow's other bots, to give them the ability to connect to Cozmo cubes. At the time of writing this to my knowledge he has not been attached to a bot, and currently only connects to cubes by himself.