Li'ndane, or Li, was a Culture human who participated in the GCU Arbitrary's survey of Earth.
He was especially hairy and ape-like, and would not have passed as an Earth-human without significant alteration, and thought the locals would mistake him for a Yeti.
He argued that the whole "incontestably neurotic and clinically insane species" should be eradicated with a micro black hole.[1]
During the survey, he became a Star Trek fan and campaigned to be voted captain of the Arbitrary.