Thennanin found proto-Rammin languishing around the fading oases that dotted their desert homeworld.

During Uplift, these hardy beings became the Thennanin's warrior caste. But when their indenture expired, they petitioned to pass this duty to the next client in line, the Ynnin.

1.5 metre tall bipeds, the Rammin have two elbows on each arm. Their hands have two strong fingers and three opposable, dexterous fingers. Forward-facing optical sensors spread across the face. It is suspected these "see" in many different wavelength bands.

They have a low-key presence in Galactic affairs, tending to live somewhat apart from the rest of Galactic society, congregating in low-density star clusters. They are notorioulsy resistent to control by outsiders, even their patrons.

Sources: Contacting Aliens, An Illustrated Guide to David Brin's Uplift Universe, The Uplift War, GURPS Uplift,