Weird Tales of the Numenera
Level 5. Though he has numerous psychic powers, at present he generally only uses telepathic communication. The full extent of his powers are unknown.
Years ago, Borgeal was a Beale (a psychic) and was shunned by his village. He was cast out deep underground. Over centuries, all that was left of Borgeal was a petrified brain. However, he retained sentience and control over his psychic powers, even though many of his memories have become hazy. He travels around in Dzhudututsu’s backpack and communicates via telepathy.