Givin / Legends The Givin were the indigenous sentient species of the planet Yag ' Dhul . They were best known for their natural mathematical ability which made them expert starship builders and astrogators . Other notable features of the Givin were their skeletal appearance , and their ability to survive in a vacuum . Biology and appearance . Givin appeared to be living humanoid skeletons , because of their hard , pale white " skin " and deep sunken black eyes . Though they had four - or five - fingered hands , they had three - toed feet . They carried their arms and legs " held out " from their bodies , making their appearance even more bizarre . Some likened their stance to Twi ' lek string puppets . Due to a complex system of moons that created atmospheric tidal upheavals on Yag ' Dhul , the Givin evolved a hard exoskeleton that could seal all external orifices to protect against sudden depressurization and temperature changes . It also provided protection from physical harm . Thus , Givin had a phobia of exposed skin , and would avoid seeing it in others whenever possible . In order to maintain this sealed system , Givin needed to eat approximately three times more than Humans of the same mass . Givin could easily survive in a total vacuum for a standard day . Culture . Givin were highly intelligent , and had such a propensity for mathematics that their society was ruled over by a mathematical theocracy , or mathematocracy , with the greatest mathematicians serving in the ruling Body Calculus . Their mathematical skills were , like their sealed exoskeletons , adaptations to Yag ' Dhul ' s complex tidal systems — their mathematics were developed to predict Yag ' Dhul ' s randomly shifting oceans and atmosphere . The planetary governor of Yag ' Dhul was decided by contests that involved calculations of complex multidimensional differentials , and all political decisions were based on null - modal probability . They spent as much time designing their starships mathematically as it took to build them , and so created some of the most impressive , complex , and sleek ships in the galaxy . Often , other species would need to modify a purchased Givin starship , installing a navicomputer or pressurization system which would often be left out as unnecessary by the Givin , who could survive in a vacuum and mentally calculated navigational vectors . History . During the Clone Wars , the Givin lent their mathematical , engineering , and navigational talents to the Confederacy of Independent Systems , producing such designs as the " Wavecrest " - class frigates . Givin theoretical astrogators were highly sought after and some were recruited by the Republic during the conflict . The shipyards of the Givin were apparently destroyed during or after the Clone Wars . By the time of the Yuuzhan Vong War , the Givin shipbuilding industry had recovered and was producing highly advanced ships for both military and civilian purposes . Yag ' Dhul was attacked once by the Yuuzhan Vong , but never again . Afterward , ambassadors to the planet made sure they underwent extensive education in mathematics before negotiating with the Givin . Givin in the galaxy . While they respected other shipbuilding species such as the Verpine and the Duros , they disliked the Mon Calamari due to differences in design philosophy . They also tended to be subtly arrogant toward other species who could not survive in a vacuum ( Duinuogwuin being the major exception ) . Finally , since non - Givin often failed to solve the simple quadratic equations used as introductions in polite Givin society , Givin found most aliens to be rather rude . Behind the scenes . According to the Elis Helrot action figure by Hasbro , the Givin physiology features three - toed feet . The PC game " " refers to the species as " Yag ' Duhls . "